Favourite is probably Futurama followed by The Simpsons, but I like various non-animated sitcoms, too.
Examples: Community, Party Down, Arrested Development, Better of Ted, The League
Other shows: Mad Men, Breaking Bad, Spartacus (lol)
The thing is I tend to not follow the drama shows (such long episodes and inflexible times), and most of the sitcoms I like are not ongoing. I'm watching Generation Kill right now.
Also, I like Archer.