Kung Fu
This was one of the first side-scrolling beat-em-ups. It's loosely based on the Bruce Lee movie Game of Death, where your character has to make his way up the floors of a tower, beating progressively tougher enemies along the way. While the character doesn't sport Lee's swank jumpsuit, he does make Lee-style "kiyai" yells when he unleashes attacks.
Before coming to the home systems, this was a popular arcade game known as "Kung-Fu Master".
Downloadable Files (PC - Windows/DOS):
Nesticlexx.zip (191 KB "Nesticle" Nintendo Entertainment System emulator)
Kungfu.zip (28.7 KB "Kung Fu" NES ROM)
Note: both files are required