A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.


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Won 1 Golden Globe. Another 60 wins & 204 nominations. See more awards »
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Series cast summary:
 Leonard Hofstadter (214 episodes, 2006-2016)
 Sheldon Cooper (214 episodes, 2006-2016)
 Penny / ... (213 episodes, 2007-2016)
 Howard Wolowitz (213 episodes, 2007-2016)
 Raj Koothrappali (213 episodes, 2007-2016)
 Bernadette Rostenkowski (143 episodes, 2009-2016)
 Amy Farrah Fowler (137 episodes, 2010-2016)


Leonard Hofstadter and Sheldon Cooper are both brilliant physicists working at Cal Tech in Pasadena, California. They are colleagues, best friends, and roommates, although in all capacities their relationship is always tested primarily by Sheldon's regimented, deeply eccentric, and non-conventional ways. They are also friends with their Cal Tech colleagues mechanical engineer Howard Wolowitz and astrophysicist Rajesh Koothrappali. The foursome spend their time working on their individual work projects, playing video games, watching science-fiction movies, or reading comic books. As they are self-professed nerds, all have little or no luck with women. When Penny, a pretty woman and an aspiring actress from Omaha, moves into the apartment across the hall from Leonard and Sheldon's, Leonard has another aspiration in life, namely to get Penny to be his girlfriend. Written by Huggo

Plot Summary | Add Synopsis


Smart Is The New Sexy. See more »


Comedy | Romance


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Parents Guide:




Release Date:

1 May 2006 (USA)  »

Also Known As:


Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


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. See more »


In the time-line at the beginning of the show there is a misprint: it says "91,0009C" instead of "91,000BC". See more »


[repeated line when someone accuses Sheldon of being crazy]
Sheldon: I'm not crazy. My mother had me tested!
See more »

Crazy Credits

One of the final cards to appear in the credit sequence is the vanity card for Chuck Lorre Productions. In keeping with his practice on "Dharma and Greg" and "Two and a Half Men", there is a different message on the card each week, written by Chuck Lorre himself. See more »


Referenced in Honest Game Trailers: Pokemon Diamond and Pearl (2015) See more »


History of Everything (The Big Bang Theory Theme)
Music & lyrics by Barenaked Ladies
Performed by Barenaked Ladies
Played during the opening titles
See more »

Frequently Asked Questions

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User Reviews

Guilty Pleasure
16 October 2007 | by (Canada) – See all my reviews

This show is definitely one of my guilty pleasures! Tuesdays are spent anxiously awaiting its posting on iTunes so I can download it, as I live in Canada & don't have cable. TBBT is a trip down memory lane for me, as it IS my high school experience (20+ years ago, I was a smarter Penny). I love the characters, especially Leonard who is adorable, and the smarmy yet surprisingly charming Wolowitz. It has the feel of "Frasier Goes To College". I do agree though that they should lose the laugh track - annoying, but not enough to make me stop watching. BTW, very smart of CBS to originally have offered the pilot as a free download or I would never have given it a look. Now I'm an addict!

143 of 240 people found this review helpful.  Was this review helpful to you?

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