I've always been a big fan of Seinfeld but I think my all time favorite comedy is Always Sunny in Philadelphia. That show is like Seinfeld on crack. It’s such a ridiculous show with awesome characters. It’s probably the only tv show where I don't have a favorite character (It changes from episode to episode).
I highly recommend Sunny in Philadelphia to comedy fans who haven't seen it before. Honestly it can be slightly difficult to get 'into', but there’s a good chance you'll be hooked after a few episodes.
The best seasons would be imo 2, 3, 4 (they have 8 seasons and more on the way in case your wondering). There are tons of hilarious episodes, I'll list a few:
Season 2- Dennis and Dee go on Welfare, Mac Bangs Dennis' Mom
Season 3- Dumpster Baby, The Gang gets Wacked (2 part), Mac's a Serial Killer
Season 4- Manhunters, Gang Solves the Gas Crisis, Sweet Dee has a Heart Attack
I could go on about how I love this show but I wanna hear from you. What's your favorite comedy tv show?