Directed by Judd Apatow, this comedy stars Seth     Rogen and Katherine Heigl. Ben Stone played by  Rogen has a one night stand with Alison Scott (Heigl). He gets the shock of his life when Alison declares that she is expecting a baby. The two are like chalk and cheese but make up their mind to make their relationship work for the baby’s sake.


Katherine Heigl and Seth  Rogen in Knocked Up.