Seth Rogen was out of Knocked Up.
After Rogen received critical praise for his performance , Universal Pictures agreed to cast him as the lead in Apatow 's films Knocked Up and Funny People .	Universal Pictures	Universal Pictures	Knocked Up	Knocked Up	Funny People	Funny People
Knocked Up is a 2007 American romantic comedy film written , directed , and co-produced by Judd Apatow , and starring Seth Rogen , Katherine Heigl , Paul Rudd , and Leslie Mann .	Judd Apatow	Judd Apatow	Seth Rogen	Seth Rogen	Katherine Heigl	Katherine Heigl	Paul Rudd	Paul Rudd	Leslie Mann	Leslie Mann	romantic comedy film	romantic comedy film
