Sam Kinison's first appearance on the Tonight Show with David Letterman, 11-14-1985.

Sam Kinison shows Al what life would be like if he was never born.

Carlos "Men-Steal-Ya" caught again using a joke from Sam Kinison. Coincidence?

He needs the hat and overcoat to complete the look.

Everybody knows it, Mencia's notorious for stealing other people's material. Here are a few clips of the most famous work he's stolen. Do some more research on it, especially Joe Rogan's retaliation on stage.