Richard Pryor, George Carlin, Lenny Bruce, Chris Rock, Steve Martin, Rodney Dangerfield, Bill Cosby, Eddie Murphy, Johnny Carson, Jerry Seinfeld, Robin Williams, Bob Newhart, David Letterman, Don Rickles, Jonathan Winters, Sam Kinison, Steven Wright, Andy Kaufman, Buddy Hackett, Billy Crystal, Bill Murray (not a comedian but I think he's hilarious).