What's the first Apatow movie you ever saw?

Same. Heavy Weights and it's the only movie he's done that I like.

Cheating, but I'm going with Freaks and Geeks.

Not knowing it was Apatow: Heavyweights

Knowing of Apatow: Knocked Up which is the first time I ever laughed so loud in a theater I fell out of my chair in hysterics.

Freaks and Geeks however holds a place for me. I was one of the first run fans of that show and loved it.