Ignore the Bruce Lee fanboy JediAndi. He's only correct about one thing: the one inch punch is a punch from 1 inch away, and it's devastating.
Bruce Lee did NOT invent it. He stole it from Wing Chun, the basis of his Jeet Kune Do (again, not a martial art, a martial PHILOSOPHY). He also never learned it properly. His version sent the opponent back a few feet. Bruce Lee only knew that way. The REAL Wing Chun version (I take Wing Chun, by the way), cracks the opponent's sternum in half, and they don't fly back, they usually fall down right on the spot, and unless proper medical attention is seeked, they will die a slow, painful death.
Haha, Bruce Lee fanboys never cease to amuse me. Silly Jeet Kune Do
Guy 1: WHOA DUDE DID YOU SEE BRUCE LEE DO THAT 1 INCH PUNCH!!111!! HE SENT THE GUY FLYING!
Guy 2: Shut the hell up, fanboy. The real 1 inch punch makes the recipient's sternum crack in half and doesn't send them flying. And Jeet Kune Do is not a martial art, it's a martial philosophy.