Gut Rumbles is polling people on the top comedians of all time. Go there and enter your list. Unfortunately, I can't think, off the top of my head, the names of some of the people I've seen on HBO or Comedy Central who crack me up. So, just off the cuff, here's my list

Bill Cosby
Dennis Miller
Jerry Seinfeld
Robin Williams
Steven Wright
Larry Miller
Jon Stewart

(link via Right Wing News)