Knocked Up is a 2007 American comedy film, co-produced, written and directed by Judd Apatow. Starring Seth Rogen, Katherine Heigl, Paul Rudd, and Leslie Mann, the film follows the repercussions of a drunken one night stand between Rogen's slacker character and Heigl's just-promoted media personality character that results in an unintended pregnancy.

Plot

Ben Stone (Seth Rogen) is a lazy, dimwitted and immature 23-year-old Jewish Canadian and claimed illegal immigrant from British Columbia, living off funds received in compensation for an injury and sporadically working on a Mr. Skin-like website with his roommates in between smoking marijuana or goofing off with them. Alison Scott (Katherine Heigl) is a career-minded woman who has just been given an on-air role with E! Entertainment Television, and is living with her sister Debbie's (Leslie Mann) family. While celebrating her promotion, Alison meets Ben at a local night club. After a night of drinking, they end up having sex. Due to a misunderstanding, they do not use protection: Alison uses the phrase "just do it" to encourage Ben to put the condom on faster, which he misinterprets as "forget the condom". The following morning, they quickly learn over breakfast that they have little in common and go their separate ways which leaves Ben visibly defeated when she walks away.