I watch a lot of TV comedy, probably too much! Most of the really good stuff, in my view, is tucked away in late night schedules...and are mostly repeats!
I'm enjoying at the moment:
Curb Your Enthusiasm
Black Books
My Name is Earl
The New Statesman (political satire with Rik Mayall playing Alan B'Stard)
The Young Ones
Bottom
Frasier
Factory (a short series, shown late night on Dave. Basically about four guys who work in a factory and the trouble they get into.)
Modern Family
Arrested Development
I'm also in my cartoon animation comedies- in some instances, Family Guy's very funny, but the newer episodes both expose the weakness of the old animations and also waste a hell amount of time setting up jokes- most of the episodes consist of filler. Moving away from that, I really enjoy American Dad!- I just feel more empathy with the characters, and Roger the Alien can be absolutely hilarious, as can Stan Smith. Bob's Burgers on E4's pretty funny too, definitely an up-and-comer!