Element Ninja's/Super Ninja's is awesome! My brother and I talked about that movie for days when we first saw it as kids. It was that one scene in particular where the guy was pinned down from the four trees and... you know.
Fist of Fury
This is one of my favorites. I like how bruce lee tends to pace his fight scenes, it's not a wall of action. This is the bruce lee vs the Japanese school clip. What i like best about this scene is the setup in the scene before it, this guy is taunting the chinese school daring them to fight and at one point starts to slap bruce lee in the face... and he just takes it.