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

Romantic comedy is a subgenre of comedy and romance fiction, focusing on lighthearted, humorous plot lines centered on romantic ideas, such as how true love is able to surmount most obstacles. In a typical romantic comedy, the two lovers tend to be young, likeable, and seemingly meant for each other, yet they are kept apart by some complicating circumstance until, surmounting all obstacles, they are finally united. A fairy-tale-style happy ending is a typical feature.