I'm not too original apparently because most of my favorites have already been listed multiple times, such as Seinfeld, Arrested Development, Freaks and Geeks, Family Guy, etc. I also love the first and only season of Flight of the Conchords. I haven't seen It's Always Sunny in Philadelphia but hear good things, and the couple episodes of Curb Your Enthusiasm I've seen were great. I will also grudgingly admit that the first couple seasons of Friends were pretty funny. Maybe this should go in the guilty pleasures thread from awhile back.