Allison Scott (Heigl) is an up-and-coming entertainment journalist whose 24-year-old life is on the fast track. But it gets seriously derailed when a drunken one-nighter with slacker Ben Stone (Rogen) results in an unwanted pregnancy. Faced with the prospect of going it alone or getting to know the baby's father, Allison decides to give the lovable doof a chance. An overgrown kid who has no desire to settle down, Ben learns that he has a big decision to make with his kid's mom-to be: will he hit the road or stay in the picture? Courting a woman you've just Knocked Up, however, proves to be a little difficult when the two try their hands at dating. As they discover more about one another, it becomes painfully obvious that they're not the soul mates they'd hoped they might be. With Allison's harried sister Debbie (Mann) and hen-pecked brother-in-law Pete (Rudd) the only parenting role models the young lovers have, things get even more confusing. Should they raise the baby together? What makes a happy lifetime partnership after all? A couple of drinks and one wild night later, they've got nine confusing months to figure it out...

  • 2 hr 9 minR
  • Jun 1, 2007
  • Comedy

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Cast & Crew

  • Katherine Heigl

    Katherine HeiglActor

  • Seth Rogen

    Seth RogenActor

    An actor, comedian and writer, Seth Rogen has come a long way from doing stand-up comedy as a teen. Rogen was born in Vancouver, British Columbia, to Sandy (Belogus), a social worker, and Mark Rogen, who worked for non-profits. His father is American-born and his mother is Canadian. He is of Russian Jewish descent. He attended Vancouver Talmud Torah Elementary School and Point Grey Secondary School (although he dropped out of high school to move to Los Angeles) and was known for the stand-up comedy he performed at Camp Miriam, a Habonim Dror camp. At sixteen, Rogen placed second in the 1998 Vancouver Amateur Comedy Contest. Soon after that he landed his first role in Judd Apatow's short-lived but well regarded TV series Freaks and Geeks (1999), taking on the role of Ken Miller. Though the show only lasted one season, it was the launching pad for many careers, including Rogen, Apatow, James Franco, and Jason Segel. This early work sharpened Rogen's keen improvisational skills, which he's used on many projects since. Following Freaks and Geeks (1999), he participated in a few unsuccessful television projects, and then joined the American television version of Da Ali G Show (2003) as a writer during its second and last season, along with his childhood friend and writing partner Evan Goldberg. The writing team received an Emmy nomination. As a huge fan of the first season, Rogen was thrilled to get the chance to work with Sacha Baron Cohen. Continuing his work with Apatow, he joined the cast of Apatow's debut film The 40-Year-Old Virgin (2005) and is credited as co-producer. After that he took the lead in Knocked Up (2007), Apatow's second movie and a huge success. He's since been a frequent collaborator with Apatow, in projects such as Superbad (2007), Pineapple Express (2008) and Funny People (2009). He co-wrote Superbad (2007), with Goldberg; the pair started the project when they were teens. They won the Canadian Comedy Award for Best Writing in a Film in 2008. They later wrote Pineapple Express (2008) and The Green Hornet (2011), also starring Rogen. A talented voice artist, Rogen is in the animated films Horton Hears a Who! (2008), Kung Fu Panda (2008), and Monsters vs. Aliens (2009), and has voiced characters for The Simpsons (1989) and American Dad! (2005). Rogen was named the Canadian Comedy Person of the Year by the Canadian Comedy Awards in both 2008 and 2009. Rogen lives in Los Angeles with Lauren Miller Rogen, whom he met in 2004. They became engaged in September 2010 and married in October 2011.
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  • Leslie Mann

    Leslie MannActor

    Leslie Jean Mann was born in San Francisco, California. She was raised in Newport Beach, California by her mother, Janet Ann Ayres. At the age of seventeen, she launched her career, appearing in various TV commercials. Her screen break came when she was cast as Nurse Mary in the short-lived Birdland (1994). Further TV and film roles followed, including The Cable Guy (1996), where she met her husband, Judd Apatow, who was a producer on the film. The story goes that after Mann left her audition for the role, Apatow turned to his colleagues and said "there goes the future Mrs. Apatow". Further successes followed for Mann in such projects as George of the Jungle (1997) and The 40-Year-Old Virgin (2005). She also appeared alongside her daughters - Maude Apatow and Iris Apatow - in Knocked Up (2007), Funny People (2009) and This Is 40 (2012).
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  • MARTIN STARR

    MARTIN STARRActor

  • Paul Rudd

    Paul RuddActor

    Paul Stephen Rudd was born in Passaic, New Jersey. His parents, Michael and Gloria, both from Jewish families, were born in the London area, U.K. He has one sister, who is three years younger than he is. Paul traveled with his family during his early years, because of his father's airline job at TWA. His family eventually settled in Overland Park, Kansas, where his mother worked as a sales manager for TV station KSMO-TV. Paul attended Broadmoor Junior High and Shawnee Mission West High School, from which he graduated in 1987, and where he was Student Body President. He then enrolled at the University of Kansas in Lawrence, majoring in theater. He graduated from the American Academy of Dramatic Arts-West in Los Angeles and participated in a three-month intensive workshop under the guidance of Michael Kahn at the British Drama Academy at Oxford University in Britain. Rudd helped to produce the Globe Theater's production of Howard Brenton's "Bloody Poetry," which starred Rudd as Percy Bysshe Shelley.
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  • ADAM SCOTT

    ADAM SCOTTActor

    Adam Scott was born in Santa Cruz, California, the son of Anne and Dougald Scott. He has two older siblings, Shannon and David. Scott has said that his brother David "looks like me but is far more cerebral and inherited the intellect of our parents," both of whom are retired teachers. He graduated from Harbor High School and he is a graduate of the American Academy of Dramatic Arts in Los Angeles, California.
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