Knocked Up is a 2007 American comedy film co-produced, written, and directed by Judd Apatow. The films stars Seth Rogen, Katherine Heigl, Paul Rudd, and Leslie Mann. It follows the repercussions of a drunken one-night stand between a slacker and a just-promoted media personality that results in an unintended pregnancy. A spin-off sequel, This Is 40, was released in 2012.
Alison Scott (Katherine Heigl) is a career-minded woman who has just been given an on-air role with E! and is living in the pool house with her sister Debbie's (Leslie Mann) family. Ben Stone (Seth Rogen) is laid-back and sardonic. He lives off funds received in compensation for an injury and sporadically works on a celebrity porn website with his roommates (Jay Baruchel, Jonah Hill, Jason Segel and Martin Starr), in between smoking marijuana or going off with them at theme parks such as Knott's Berry Farm. While celebrating her promotion, Alison meets Ben at a local nightclub. After a night of drinking, they end up having sex. Due to a misunderstanding, they don't use protection: Alison uses the phrase "Just do it already" to encourage Ben to put the condom on, but he misinterprets this to mean to dispense with using one. The following morning, they quickly learn over breakfast that they have little in common and go their separate ways, which leaves Ben visibly upset.