10. Enter The Dragon (1973) - Revenge
Bruce isn't short of enemies in Enter The Dragon. But the precipitating event that leads to his decision to enter Han's brutal martial arts tournament is revenge against the evil O'Hara who was responsible for Bruce's sisters death. When they actually fight the violence is brutal and all to real as the actor who played O'Hara sliced Bruce's arm with a smashed bottle, and Bruce retaliated with real blows. Finally Bruce dispatches him by jumping into the air and power-stomping O'hara's face, ending the scene by pulling a face that would make any other man look ridiculous, with onlookers speculating on whether he'd just had a trouser accident. However, when Bruce Lee does it you consider calling your lawyer and making sure your affairs are in order.