Knocked Up (2007) Poster



Anne Hathaway was originally cast as Alison Scott but left due to 'creative differences'. In an interview, she revealed that she objected to Judd Apatow's plan to use footage of a real birth. Juliette Lewis, Drew Barrymore, Rachael Leigh Cook, Cameron Diaz, Claire Danes, Tiffani Thiessen, Josie Davis, Uma Thurman and Renée Zellweger all dropped out or were booted out. Christina Aguilera turned it down in order to focus on her music career. Brooke Shields, Jennifer Connelly, Michelle Pfeiffer and Sarah Jessica Parker were deemed too old.
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The actors who play Ben's friends all keep their real names for their characters names.
This film features Seth Rogen's first leading role.
Ken Jeong, who is a doctor in real life, makes his film debut in this film, playing a doctor.
Jonah suffers from nosocomephobia, fear of hospitals.
This movie was originally going to be a follow up to The 40-Year-Old Virgin (2005), having Seth Rogen and team to reprise their roles as the Smart Tech team.
The kids who play the children of Debbie (Leslie Mann) and Pete (Paul Rudd) are actually the real children of Mann and director Judd Apatow, her husband.
The word 'fuck' and its derivatives are said a total of 120 times throughout the film.
According to the DVD commentary, Jay Baruchel made a deal with director Judd Apatow that he would be the naked guy in the earthquake scene if he didn't have to ride the rollercoaster, because he is terrified of them. Apatow of course broke this deal by making Baruchel ride, so the part of the naked guy went to Jason Segel. Baruchel's frightened reaction in the rollercoaster scene is therefore very real and not acted.
Since "knocked up" doesn't mean anything in most languages, the film's translation in Russia is "A little bit pregnant." In Brazil it's "Slightly Pregnant". In Italy it's 'Very Pregnant' ('Molto Incinta').
Bill Hader was originally meant to play one of Ben's group of friends, but it was determined that he "looked too old", so he was recast.
Virtually all of the conversations spoken by Judd Apatow's daughters were improvised as it made the family dynamic seem more realistic.
Judd Apatow has stated on the DVD commentary numerous times, that the film is partially based on the birth of his and Leslie Mann's first daughter, Maude. Scenes taken directly from reality include:
  • Ben trying to get their doctor on the phone and cursing out numerous doctors when he can't

  • the cantankerous staff physician who Ben has to take out in the hall to calm

  • the argument on the way to the clinic where Allison throws Ben out of the car and they then heated argue at the clinic when he gets there

  • and the scene where Allison tries to take a bath to calm herself just before going to the hospital

The maple leaf tattoo on Jay Baruchel's chest is real. He had it done when filming in L.A. on a previous project, where he was feeling very homesick for his native Montreal.
Judd Apatow was originally planning on using real footage of a woman giving birth for the delivery scene. However, at the last minute, he was unable to because he needed a worker's permit for the yet-to-be-born child.
Seth Rogen, Jason Segel and Martin Starr all previously starred together in Freaks and Geeks (1999) as Ken, Nick and Bill.
Paul Rudd contributed much to the discussions and arguments between Pete and Debbie in the film, based on real-life interactions with his wife. The character was loosely autobiographical for Judd Apatow to begin with.
Much of the dialogue was improvised by the actors or fed to them in the moment by Judd Apatow just before a take.
In one scene, Ben (Seth Rogen) mentions that he likes Munich (2005) because 'Jews kick ass'. This was not in the script but was improvised by Rogen on the spot. However, the final film uses only one-third of the complete improvisation (not included in DVD special features). After the film was released, Steven Spielberg phoned director Judd Apatow to compliment the movie and Apatow sent him the complete uncut improvisation of the scene. Rogen would later costar with Munich's Eric Bana in Apatow's Funny People (2009).
Ken Jeong, who plays Dr. Kuni, is an actual M.D. He developed his comedy routine while completing his residency in internal medicine in New Orleans.
The scene where Ben (Seth Rogen) dances with Allison takes place at a Club in Los Angeles called Plan B. Ironically (given this movie's unwanted pregnancy plot), "Plan B" is a brand name for the progestin-only emergency contraception Levonorgestrel.
Champagne was broken out onset when Judd Apatow shot a million feet of film, a substantially higher figure than most feature films.
Jodi, the character played by Charlyne Yi, is supposed to be stoned in every scene she's in. However, in 2009 Yi told The Tonight Show with Conan O'Brien (2009) host Conan O'Brien that she had never gotten high before or after playing the role and in fact didn't even know that the character was supposed to be a stoner at the start of her audition.
Jay Baruchel is terrified of roller-coasters. In the opening sequence where they are at the amusement park he was forced to go on it by Judd Apatow. He only agreed to ride it once, whereas the rest of the cast rode the coaster 7 more times to get all the right takes.
Leslie Mann was on set for the birthing scenes, acting as pain advisor having been through the process twice before.
The crew members in the studio scenes at E! are actual members of the E! News (1991) crew. However, the editing bay where Alison edits her pieces with Brent isn't an edit bay. It is the studio control room for E! News and the Daily 10.
The montage scenes where we see Seth Rogen and his friends ride a rollercoaster proved difficult. Multiple takes meant that Rogen vomited frequently while Jay Baruchel has a pathological fear of rollercoasters and took a lot of persuasion to go on one in the first place.
Charlyne Yi originally had just one line in the script but Judd Apatow loved her improvisations so much that he just let her riff and generate her own lines.
Kristen Wiig's part was originally written for a man until Judd Apatow thought it would be funnier to turn the part into a woman who hates other women.
David Krumholtz, who reportedly is a very good friend of Seth Rogen, was supposed to play a character named "Gummy" but backed out because he was offered the lead role in a Woody Allen film. However, the Allen film fell through and he didn't get the part for "Gummy" back. There's an interview with him and the director on the DVD special features talking about this.
The release name for this film in Portugal translates into "Bloody Bad Luck".
Katherine Heigl had to perform her sex scene with Seth Rogen two days after getting engaged.
Although the role of Ben Stone was always meant for Seth Rogen, Judd Apatow created a mockumentary for the DVD entitled "Finding Ben Stone." The fake documentary chronicles the fictional hard time that Apatow had in finding the right male lead for his film. Among those featured in Finding Ben Stone are Michael Cera, James Franco, and even Orlando Bloom. Although the documentary is clearly satirical, many have taken it to be true.
Paul Rudd really does play Fantasy Baseball like his character in the film.
Mila Kunis auditioned for the role of Allison. She did not get the role but Judd Apatow remembered her and cast her in Forgetting Sarah Marshall (2008) which he produced.
Katherine Heigl has said in several interviews in 2008 and 2009 that she considered the movie to be sexist, because it depicts women as "shrews" and men as "lovable", and commented that she found the movie "hard to love". Co-star Seth Rogen and director Judd Apatow were unpleasantly surprised to hear it, as they remembered working quite well with her, and quickly responded by saying that Heigl's The Ugly Truth (2009) didn't make women look any better. In 2016, Heigl apologized to Rogen and Apatow, saying that her earlier statements reflected the criticism of many women who found the movie sexist, and calling her own comments "immature". Rogen commented on this that despite being displeased by the remarks, he never held any hard feelings towards her.
The film that Alison and Ben are watching with opening credits "boobs and bush" is Carrie (1976).
They name their child Stephanie, as seen in the clip that rolls with credits.
The early scene in which Allison is driving Sadie and Charlotte to school, Charlotte says she wants to listen to Green Day. In the sort of sequel This Is 40 (2012), Billie Joe Armstrong, frontman of Green Day, makes a cameo appearance.
As a special feature on the DVD, there is a fake scene were Michael Cera gets fired from the film, due to arguments with director Judd Apatow. There is also a fake documentary where the studio is apparently unhappy with Apatow's direction, causing them to appoint Bennett Miller as co-director, much to Apatow's annoyance.
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Kim Basinger, Debra Winger and Frances Fisher were each offered the role of Alison's mom, but all three turned down the part.
Jennifer Love Hewitt and Kate Bosworth auditioned for the female lead.
Jodie Foster was considered to play Debbie, but was later discarded.
Release prints were delivered to theaters with the fake title 'Boneyard'.
In the scene where Allison and Debbie are trying to contact Ben after she finds out she's pregnant, they are in Pete's office. Since Pete is in the music industry he has pictures of him with various celebrities and right behind Debbie is a picture of Pete with Elvis Costello. This is actually a shot from the movie 200 Cigarettes in which both Paul Rudd (Pete) and Elvis Costello are in. Elvis Costello makes a surprise appearance at the party towards the end of the movie.
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Ben Stone, the name of Seth Rogen's character, is also the name of Michael J. Fox's character from Doc Hollywood (1991). In this movie, Ben and Pete discuss the "Back to the Future" series, which Fox starred in.
The website Ben Stone and his friends are working on, "flesh of the stars," is discovered to have a competitor, MrSkin.com. There really is a website called MrSkin.com.
In the scene where Allison and Debbie go to a bar, for the second time, when Allison is pregnant and they both are denied entry by the doorman, the security guy is Craig Robinson, said to be a good friend of Seth Rogen. They have appeared together in This Is the End (2013) along with several of Ben's friends, Jonah Hill, Jay Baruchel and Jason Segel.
This is the second Judd Apatow directed film in which Paul Rudd mentions the television show Everybody Loves Raymond (1996), the other being The 40-Year-Old Virgin (2005).
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Some of the extras can be seen laughing during the scene where Leslie Mann insults the club bouncer.
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Spider-Man 3 (2007) is mentioned twice in the film. James Franco has a cameo in the film.
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Steve Carell, Andy Dick, Jessica Simpson, Eva Mendes, Ryan Seacrest, James Franco, Jessica Alba: As themselves in the phony news broadcasts seen throughout the movie.


The trivia item below may give away important plot points.

In the ending scene when Ben tells Alison that he got them an apartment in East LA they joke about wearing gang colors of the Bloods, Crips, and The Latin Kings. They would be extremely unlikely to run into any of the three gangs in East LA since the Bloods and Crips are not well known to be active in that part of LA since it is predominately Hispanic geographically while the Latin Kings are more known to occupy other major cities such as New York and Chicago and do not have a known presence in East LA
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