Curb Your Enthusiasm, without a doubt. I've always been a huge Seinfeld fan, so it kinda follows the same pattern.
I have to admit I haven't seen many episodes of those other shows to really decide very well, although I do know that Sex in the City is one of the dumbest shows I ever let myself sit through for, I don't know, I think I was able to tolerate about 10 minutes of an episode once? blah.