Edit
The Big Bang Theory (TV Series 2007– ) Poster

(2007– )

Trivia

Jump to: Spoilers (7)
Penny is the only main character remaining whose surname has yet to be revealed.
Most of the time, Leonard has no lenses in his glasses.
Jim Parsons audition for the role of Dr. Sheldon Cooper was so good that creator Chuck Lorre immediately asked Parsons to come in for a second one, because Lorre wanted to be 100% sure Parsons was as brilliant as he seemed. After the 2nd audition went perfectly, Lorre cast Parsons on the spot.
Recurring guest Mayim Bialik is the only cast member to have a PhD. In 2008, she completed her neuroscience studies.
The two main characters (Sheldon Cooper and Leonard Hofstadter) are named after late television producer Sheldon Leonard.
Kaley Cuoco-Sweeting missed filming a few episodes of season four because of a broken leg that was the result of a horseback-riding accident. In her first appearance following the accident, she was filmed standing behind a counter.
In fall 2010, Kaley Cuoco-Sweeting revealed to CBS's Watch! Magazine's Behind the Scenes (2008) that she and her "Big-Bang Theory" co-star and love interest Johnny Galecki had secretly dated for two years earlier in the run of the show, but they were no longer together.
During the third season, the producers became aware of a series called "The Theorists," produced and broadcast in the country of Belarus, that was a virtual copy of The Big Bang Theory (2007). Legal action over copyright infringement would have been futile, since the production company was pretty much owned by the Belarus government. However, a lawsuit turned out not to be necessary, because when word got out that the show was a rip-off, the actors quit and the show was immediately canceled.
On January 3, 2013, it was announced that a team of Brazilian Biologists named a newly discovered type of orchid bee that was eventually named Euglossa bazinga. This was to honor the show and specifically Sheldon's catchphrase "bazinga." Executive producer Steven Molaro responded in a press release: "We are always extremely flattered when the science community embraces our show. Sheldon would be honored to know that Euglossa bazinga was inspired by him. In fact, after Mothra (1961) and griffins, bees are his third-favorite flying creature."
Even though Jim Parsons' character Sheldon Cooper is a huge Star Trek (1966) fan, Jim himself has never seen the show. The same is true for Doctor Who (1963).
Although Sheldon does not drive, Jim Parsons gets motion sickness from riding in cars, and prefers to drive them.
Sheldon frequently wears T-shirts with the characters or symbols of Green Lantern, the Flash, or the old TV show The Greatest American Hero (1981). The shirts from the "Green Lantern" comic book series are various colors with a corresponding symbol, with each color representing a different corps of heroes or villains (e.g. Red Lanterns, Orange Lanterns, etc). In the comics, each color also represents an emotion, thus possibly giving the viewer a clue to Sheldon's temperament for the day.
Raj's inability to talk to women except when drunk is based on an old co-worker of executive producer Bill Prady when he worked at a computer company.
On 14 January 2011, CBS gave the series a rare vote of confidence when it issued a three-year renewal through the 2013-14 season. It then received another three-season renewal on March 12, 2014, meaning the show will run at least ten seasons. This marked the first time in modern television history a scripted television series received back-to-back three-season renewals.
When Sheldon plays the theremin, (which is widely regarded as one of the hardest instruments to play) that is actually Jim Parsons playing the theremin.
Penny has been using the same purse since S1/Ep02.
During a first season episode, Raj, Leonard, and Howard are trying to find a fourth person to replace Sheldon on their Physics Bowl team. Raj suggests the actress Mayim Bialik, saying, "You know who's apparently very smart, is the girl who played TV's Blossom. She got a PhD in neuroscience or something." Leonard responds, "Raj, we're not getting TV's Blossom to join our physics bowl team." During Season 3, Bialik started playing the regular role of Dr. Amy Farrah Fowler on the show; Dr. Fowler has a PhD like Dr. Bialik, but in neurobiology rather than neuroscience.
The full names and occupations of the characters are as follows: Dr. Leonard Leakey Hofstader, Ph.D., Experimental Physicist; Dr. Sheldon Lee Cooper, B.S., M.S., M.A., Ph.D., Sc.D., Theoretical physicist; Howard Joel Wolowitz, M.Eng, Aerospace Engineer; Dr. Rajesh Ramayan Koothrappali, Ph.D., Astrophysics; Dr. Bernadette Mary Ann Rostenkowski, Ph.D., Microbiology; and Dr. Amy Farrah Fowler, Ph.D., Neurobiology.
On five episodes or more of season six, Mayim Bialik's right hand was hidden in certain ways and camera shots to conceal the injury and glove with which she covered her hand because of an automobile accident that occurred in August of 2012.
Despite the fact that some viewers take Sheldon's behavior, mannerisms, and social skills as a sign that Sheldon has Asperger's syndrome or otherwise falls on the autism spectrum, the show-runners have persistently denied in many interviews that Sheldon has Asperger's or any other type of autism. It should be noted however, that actor Jim Parsons (Sheldon) has stated that he does think that Sheldon actually does have Asperger's syndrome and portrays him as such.
Floors two, three, and four of Sheldon and Leonard's apartment building are the same set just re-dressed for each scene. This can be seen in the fact that the scuff marks on the moulding are identical on each level as they walk up the stairs.
Sara Gilbert (Leslie) who plays a former girlfriend of Leonard's, also played Johnny Galecki's girlfriend in Roseanne (1988). Laurie Metcalf, who plays Sheldon's mother, was also his co-star in Roseanne (1988) and Sara Gilbert's aunt.
Each of the male characters has a signature clothing article that is worn in virtually every episode: Sheldon: t-shirts worn over long-sleeve shirts; Leonard: hoodies worn over a T-shirt and under a jacket; Raj: sweater-vest worn over a shirt and usually under some type of outerwear; Howard: dickie worn under some type of outerwear. Howard usually has a pin on the left side of his dickie of the head of a space alien, and he wears large belt buckles.
Every show name follows the same format as the show's title, that being the name of a scientific episode or theory except for the pilot.
Kevin Sussman, who plays Stuart Bloom the comic book store owner, actually worked in a comic book store before becoming an actor.
Kaley Cuoco-Sweeting presented the award Best Performance by an actor in a television series--musical or comedy at the 2011 Golden Globe Awards to co-star Jim Parsons
Sheldon is from Texas, as is Jim Parsons.
Sheldon wasn't always OCD about knocking on doors. On the fifth episode of season 1, he knocks on Penny's door without knocking and calling her three times.
Sheldon's soothing song, "Soft Kitty", is based on an Australian children's song from Executive Producer Bill Prady's daughter's pre school.
Howard's mother's voice is heard throughout the show, but her face has never been actually seen on-screen. (She did appear very briefly on-screen in the season 5 finale, as the camera pans up from the roof top, but her face was still never shown.) She died after the actress who plays her Carol Ann Susi died of cancer.
The opening cast shot always features the series' regulars enjoying dinner together. The opening cast credits cast shot in seasons two through four, for instance, depict Howard, Raj, Leonard, Penny, and Sheldon, on what appears to be pizza night. However, Leonard is seen holding a plate with a white meat and some type of vegetable, such as asparagus spears. This is apparently a reference to his lactose intolerance, which would make him adverse to pizza. Amy and Bernadette were added to the shot starting in season six, even though both had been regulars on the show since season four.
One of Johnny Galecki's early roles was in an episode of Blossom: Sex, Lies and Teenagers (1991) where he played Mayim Bialik's love interest who takes her to a "make-out party".
The actors learned to actually play their instruments for the show. (Amy plays harp, Sheldon plays Theremin and recorder, and Leonard plays Cello)
The theme song uses the line "Autotrophs began to drool." This is a science joke. The word "autotroph" means "self-nourishing" and refers to life-forms (plants and algae) that create their own food internally and don't need to eat.
As the series progressed, each taping of the show was attended by Caltech students.
The quick response (QR) code, which is visible in Stewart's comic book store contains a link to the website for the comic book center of Pasadena.
Amy Farrah Fowler always has her elbows and knees covered because Mayim Bialik is Modern Orthodox. Except in S05E03 & S07E21.
Penny was an add-on from a different sitcom concept. She had been originally envisioned as Katie, a more cynical, hard-drinking, streetwise girl who worked at a makeup salon. In the original unaired pilot, she was played by Amanda Walsh.
The original working title of the show was "Lenny, Penny, and Kenny."
All the figurines and posters in Howard's room (and later on in his house with Berndette) are female super heroes or science fiction characters. The one non-female figurine, Jabba the Hutt, has Princess Leia (in her slave girl costume) sitting in front. Later on in the series, they accumulate a figurine of Berndette after the episode where he and Raj got a 3D printer.
In the original unaired pilot, the theme song of the show was "She Blinded Me with Science" by Thomas Dolby. Later on, however, a short MIDI rendition of the song is used as Howard's ringtone in The Big Bang Theory: The Lizard-Spock Expansion (2008)
According to numerous entertainment reports, CBS has reported a large jump in the series' ratings for Season 6 and have attributed the increased audience to the exposure of the show in re-runs on TBS which airs the series three nights a week in prime time blocks of up to three hours.
The character Howard Wolowitz is named after someone the creator worked with at a computer company.
Leonard's last name, Hofstadter, refers to two well-known scientists: Robert Hofstadter, the 1961 Nobel Laureate in Physics, and his son Douglas Hofstadter, who researches consciousness and cognition, and whose best-selling book about philosophy, mathematics, puzzles, art, and music, "Gödel, Escher, Bach: an Eternal Golden Braid," was published in 1979 and won him the 1980 Pulitzer Prize for general nonfiction.
A species of Brazilian bee is named for show: Euglossa bazinga.
Out of the main male cast-members, Howard is the only one who hasn't seen Penny naked in person; despite being the first to flirt with her.
The mother of Aarti Mann, who plays the role of Raj's sister Priya, is an obstetrician and gynecologist. In the show, Raj often states that his (and Priya's) father is a gynecologist.
Bernadette did not originally have such a high pitched voice. When she first appeared, she had a rather normal pitch voice and as her character began to take shape, she adopted the quirky high pitched voice which Melissa Rauch says she based off her mother's voice "without the Jersey".
While a guest on the National Public Radio program "Talk of the Nation," Mayim Bialik confirmed that the university that the characters attend and/or teach at is based on the California Institute of Technology (Caltech) in Pasedena. Additionally, in one episode, the character of Leonard stated that he worked at Caltech.
Barry Kripke (played by John Ross Bowie) has exactly the same speech impediment as Elmer Fudd - also a Warner Bros. property.
In early episodes of Season One, Sheldon mentions having an older brother in addition to his twin sister, Missy. In one instance he mentions being bullied by this older brother. However, while Missy has been seen on the show, the brother was never mentioned again, even when his mother visits. She only mentions Missy. He was mentioned in season 3 episode 4 as well. He was mentioned on season 7 episode 11 as well.
As avid comic-book fans, the guys frequently talk about comic book characters or are wearing t-shirts or other paraphernalia of comics. They frequently mention DC Comics characters such as Superman, Batman, Green Lantern, the Flash, and Wonder Woman. Both DC Comics and the series are owned and produced by subsidiaries of Time Warner.
Wolowitz says that Spock had a date every seven years. He is referring to Pon Farr, the Vulcan mating cycle that occurs every seven years. Vulcans must mate in the time of Pon Farr, otherwise they will die. So Spock has a mandatory date every seven years.
In the early episodes of Season One, Sheldon has two character traits that were not established right away. First, Sheldon understood the nature of romantic/sexual relationships. In the first few episodes, he chides Leonard for his hopes of getting into a relationship with Penny, often telling Leonard that he has no chance of having sex with her. Also, Sheldon understood the nature of sarcasm as he occasionally used it himself in the early episodes. Later, his character evolved into a purely intellectual person and an emotional "man-child" who does not fully understand sex, love, or sarcasm. Second, in the early episodes, Sheldon did not use his 3 times knock. (I.E.: Knock-knock-knock "Penny", etc.) that has become one of the character's now well known idiosyncrasies that did not begin until midway through Season One.
Sheldon verbally reveals his and Leonard's Pasadena apartment 4A's location as being 2311 Los Robles in "The Desperation Emanation." In the 100th episode, Sheldon also reveals that their apartment building is across the street from the Colorado Avenue Chevron gas station, making their building a corner location, on the corner of Los Robles and Colorado. There are two incidences of this intersection in southern California, both located in Los Angeles County, the first one is E. Colorado Boulevard & N. Los Robles Avenue, Pasadena, CA 91101, and the second one is Colorado Boulevard & Los Robles Street, Los Angeles, CA 90041. However, 2311 Los Robles is not an address by either one of those intersections. Leonard does reveal, however, that they live in Pasadena while declaring himself the Darth Vader of Pasadena.
Leonard's middle name is Leakey. Leakey is the name of a renowned family in the fields of archaeology, anthropology, and paleontology. Louis Leakey (1903-1972) was a British archaeologist and naturalist whose critical work helped to establish human evolutionary development in Africa. He also created or co-created several organizations for future research and for protecting wildlife in Africa. He also helped to establish a tradition of palaeoanthropological inquiry, and was able to motivate the next generation to continue, especially within his own family. Mary Leakey (1913-1996), Louis's wife, was a British archaeologist and anthropologist, who discovered many firsts. For much of her career she worked together with her husband, Louis Leakey, in Olduvai Gorge, uncovering relics of ancient hominines. She also developed a system of classification the relics they found. After the death of Louis, she became a leading palaeoanthropologist, helping to further establish the Leakey name and tradition with the training of her son, Richard.
Leonard is the only regular male character who wears glasses. His on-again/off-again girlfriend Penny is the only regular female character who doesn't wear glasses.
Johnny Galecki was originally approached to play Sheldon, but felt that he would be better fit to play the role of Leonard.
Wil Wheatons house number (1701) is the same as the hull number of the USS Enterprise on Star Trek:The Next Generation (NCC 1701-D).
Jim Parsons as Sheldon Cooper wears numerous shirts containing the number 73, this is also the year Jim was born in real life 1973.
The cast and crew have performed two 'flash mobs' to audiences after taping an episode, one to Carly Rae Jepsen's "Call Me Maybe" and the other to Mark Ronson's "Uptown Funk".
Howard's mother is almost never seen, only heard, despite often being as close as the next room. Conversely, via Skype, Raj's parents are quite often seen, despite being across the world in India.
Amy's apartment number is 314 obviously is a reference to pi which is usually rounded off to 3.14.
In the German-dubbed version, the voice actor for Sheldon Cooper is the same person who usually dubs Leonardo DiCaprio.
Some of the signs in the laundry room read "No open containers on the machines," "Do not leave laundry unattended," and "Please keep your clothes on while doing laundry."
Penny is the only main character whose mother is yet to be introduced.
Simon Helberg's father is also an actor. In 1982, Sandy Helberg guest-starred on M*A*S*H (1972) in the episode M*A*S*H: The Moon Is Not Blue (1982). in which he plays Corporal Bannister, who is plagued with panic attacks whenever he is around women. Hawkeye and B.J. give him pills for confidence without telling him they are placebos. The pills work and he becomes a ladies' man. This is very much how Raj tends to be with alcohol on The Big Bang Theory (2007).
In the introductory slide show, there is a picture of Tupac Shakur.
Chuck Lorre leaves a small insert at the very end of each episode. If you were to pause it at the end, you could read the insert.
Howard's mother's name is Debbie Wolowitz.
Chuck Lorree stated in an interview that Penny's surname is Barrington, the reason is yet to be revealed
6 of 6 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Raj, Priya and Bernadette are the only characters to have had both their parents introduced in the series.
The first season references the show "Blossom" and the star actress that got a neroscience degree. This was before the hired the actual actress to be Amy.
9 of 10 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Amy is allergic to avocados as revealed in season 8
While Wil Wheaton was appearing on the show, he took a photo of the set's coffee table and posted it on his much-followed blog. Among the materials on the coffee table were copies of "Mental Floss" magazine; "The Sandman Vol. 6: Fables and Reflections" by Neil Gaiman; a package of Pepperidge Farm Sausalito milk chocolate macadamia nut chunk cookies; a package of Red Vines licorice; and a package of Tim's brand original-flavor lightly salted potato chips.
Melissa Rauch playing the role of Bernadette,who is a Catholic in the series is Jewish in real life.
While having lunch at the University canteen or other eating scenes, characters don't actually eat most of the times. Howard only pretends to eat the food by moving his mouth like he is chewing it, Sheldon and Leonard just play with their food with fork.Amy and Penny are sometimes shown eating food actually. They only talk most of the time.
Both Raj's and Bernadette and Howard's apartment are filmed on the same set and are just completely redecorated to change scene, this is why it is rare to see both apartments in one episode.
3 of 3 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
No two bumpers are exactly alike. Bumpers are those short videos used to separate scenes in the show.
6 of 8 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Sheldon's father's name is George
3 of 5 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Amy's apartment is a re-dressed version of Raj's apartment.
1 of 1 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Penny talks about acting Anne Frank in a play, but she actually played Bridget who played Anne Frank in a school play in 8 simple rules.
3 of 6 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
The Chinese food containers used in a lot of the episodes are the same as in a lot of films such as Night at the Museum 2.
2 of 4 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Sheldon was born in Texas. In season 2, Leonard's girlfriend Stephanie mentions that she did her medical internship in Texas.
2 of 6 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
In season 1 episode 7 (The Dumpling Paradox) when Leonard talks about cutting Raj in half to play Halo, Raj speaks with Penny in the room. If you look at the table you will notice that Raj does not have an alcoholic drink.
1 of 2 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
The characters often mention how Raj cannot talk to women "unless he's drunk", but in fact he only needs one sip to lose his inhibitions, as evident in many of the episodes.
1 of 3 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
On Sheldon's desk there is an Android figurine, even though Sheldon uses both iPhone and iPad.
1 of 3 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Leonard is the only male lead character who hasn't taken his pants of while under the influence: Raj took his off at the coffee shop while under the influence of an experimental personality altering drug, Howard took his off on the international space station after his teammates gave him a shot for his anxiety and Sheldon took his off on stage while accepting an award in science after Penny gives him multiple glasses of wine.
1 of 3 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
In one of the episodes Raj and Howard run into the actor Nathan Fillion. They greet him and tell him they are big fans of Firefly (2001) and Dr Horribles Sing Along Blog (2008) Simon Helberg (Howard) played the character "Moist" in Dr. Horrible
Is this interesting? Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Every main character including Amy has had their mother revealed except for Penny.
1 of 4 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
Of the main 7 characters, Penny is the only one without her surname mentioned.
1 of 5 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
In the episode 'The Bat Jar Conjecture' Raj makes a reference to the TV show 'Blossom' starring Mayim Bialik in only a couple of seasons Mayim Bialik came on the show to play Sheldon's girlfriend, Amy
0 of 1 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
In the same scene that Raj says that "Blossom" would be a great addition to the Physics Bowl team, he also mentions that the "girl from 'The Wonder Years'" was also smart. In a later episode, Danica McKeller (who plays Winnie on 'The Wonder Years') plays a character who makes out with Raj.
0 of 1 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink

Spoilers 

The trivia items below may give away important plot points.

In the 100th episode where Leonard asks Penny out again, Penny is wearing the same shirt she wore in the pilot. This was probably to represent Leonard falling in love again with the same girl he did 100 episodes before.
A picture of Carol Ann Susi was placed on the fridge in Leonard and Sheldon's apartment following her death in 2014.
Carol Ann Susi, who plays Howard's unseen mother, tragically died from cancer on 11/11/2014. Her character was subsequently written out of the show.
Bob Newhart agreed to appear in the show on one condition - that he have a recurring role. Newhart appeared in three episodes as Arthur 'Professor Proton' Jeffries.
9 of 9 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
In the last episode of season 5 when Howard and Bernadette are getting married, during the wedding, Raj talks without drinking any alcohol, even though there is Amy, Penny, and Bernadette in the same place.
Of all the main characters, Leonard and Penny have had the same amount of relationships over the course of the show (Penny: Kurt, Zack, Stuart, Mike and of course Leonard)(Leonard: Penny, Dr Elizabeth, Priya, Leslie and Stephanie), then Raj (Lucy and Emily) and Howard (Leslie and Bernadette). Sheldon (Amy), Amy (Sheldon) and Bernadette (Howard) have only been with one person each.
9 of 11 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink
To date, Sheldon has never knocked on Howard's door. He did ring the bell a couple of times, but never used his way of knocking thrice.
6 of 7 found this interesting Interesting? | Share this
Share this: Facebook  |  Twitter  |  Permalink

See also

Goofs | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

Contribute to This Page