God, this was a fucking amazing movie. And definitely one where you'll love it the more times you see it.
And how many cameos were there? I counted atleast 4.
1. Period girl, Lizzie from Undeclared
2. David Krumholtz, one of the coke guys
3. Martin Starr, one the coke guys
4. The drunk from the bar was in an episode of Freaks and Geeks. I don't know his name.
Apatow can do no wrong. If any of you haven't seen Freaks and Geeks or Undeclared, do it right now.