Before I can tell you how much I loved this movie, let me point something out...

The movie starts with a heavy set, curly hair, young man driving his geo metro to high school his senior year...
I was a heavy set, curly hair, young man driving my geo metro to high school.
Everyone of my friends looked at me when he came on the screen and busted out laughing. It was kind of a good feeling.

Also if you liked this movie, I suggest seeing 40 Year Old Virgin and/or Knocked Up. All three feature the same guys, made by the same guys, and I died of laughter from all three.