I am a fan of Apatow films I have to say this was, "an instant classic." I really enjoyed 40 Year Old Virgin and Superbad, but I probably won't watch Knocked Up again. If not for a somewhat unoriginal plot, this would be the best Apatow film in my humble opinion. This movie was very funny. The script was sharp and witty. Forgetting Sarah Marshall is very similar to Ben Stiller romantic comedies, but has a better supporting cast and better writing than some of Stiller's films (Along Came Polly, Heartbreak Kid). I will definitely see this again.