Oh geez! If I were to name all the guys I like, we'd be here all night. From old school guys like Ghallager, Lenny Bruce, George Carlin, Steve Martin to middle school like Louis Anderson , Billy Connolly, Steven Wright, and Drew Carey, all the way to the new guard with Russell Peters, Louis Ck, Jeff Dunham... and these are just some of the better known ones. I used to be a regular at Jimbo's in Montreal, which is downstairs from the Comedy Works.
Let's not forget the ladies like Brett Butler, Rosie O'Donnell, and Sarah Silverman (her older stuff, her new stuff is a little too absurdist for my taste).