Anyone ever seen the movie Heroes staring Henry Winkler?
In the movie, Jack Dunne (played by Winkler) gets in a bar fight with a bad guy. When Dunne finally gets the upper hand, he pins the guy to the floor, raises his fist, and proceeds to tell the bad guy how he can instantly kill him by strategically hitting him in the nose in such a way that the cartilage will be driven into his brain. Intense scene.