9. Anthony Michael Hall (Mike, Season 1-Comparitive Religion)
An early episode that had a lot of great moments for every main character also provided an awesome antagonist in Mike. After Abed takes the last of the winter doodles, Mike is upset (What are you, a douchebag?) and slaps the plate of cookies out his hand. Jeff jumps to defend Abed (Like in the movie The Bodyguard, Abed would later point out) and Mike challenges him to a fight. This leads to the guys in the group teaching Jeff how to fight, and brought us Donald Glovers perfect Forrest Whitaker face. And I mean, come on. That must ache.