Well, first off, i'm a fan of the Whose Line is it Anyway? dudes, the majority of 'em are incredibly funny. I also dig Noel Fielding, the The IT Crowd gang, Dylan Moran, Bill Bailey, Louis CK, Hannibal Buress...
Does non-standup comedy count? If so, I gotta add the It's Always Sunny in Philadelphia crew to my list of favs as well, in that case... That show is AMAZING.