Comedian knocks out heckler with guitar:

http://www.youtube.com/watch?v=rO5_1cs4j84

Other mere verbal explosions;
Late, great Bill Hicks losing it:

http://www.youtube.com/watch?v=2PdKp...rom=PL&index=7

Dice goes insane on couple:

http://www.youtube.com/watch?v=RU6Yc2FE5M0

And the most legendary instance, Bill Burr destroying an ENTIRE audience of hecklers in Philadelphia for 10 minutes straight so badly at the end he's given a standing ovation:

http://www.youtube.com/watch?v=0S4nSzE4N-o