Warning: Video contains explicit language
Not even the worst jokes could clear a comedy club full of people who had paid cash money to see a show. But Michael Richards, Seinfeld's character Kramer, figured out a way. He scared an entire audience away in 2006 when he began to shout the N word at a heckler and continued for five minutes until said heckler returned the favor with a "cracker" comment. Richards later apologized on the The David Letterman Show via satellite at Jerry Seinfeld's request. Unable to discern if the whole thing was a stunt, the audience laughed awkwardly. Now that we know it wasn't, we cringe uncomfortably.