Oh man, I'm a huge TV nut. My all time favorite TV show is
LOST.
My other favorites consist of: Arrested Development, How I Met Your Mother, Firefly, Doctor Who, Modern Family, The Office, Parks and Recreation, Boardwalk Empire, 30 Rock, Community, Big Bang Theory, Buffy, Six Feet Under, It's Always Sunny in Philadelphia, Mythbusters, Daily Show, Colbert Report, Chuck, Frasier, Star Trek, Conan (O'Brien!), Psych, Castle, Desperate Housewives, Lie to Me, Warehouse 13, Freaks and Geeks, SNL, Futurama, The Good Guys, and Spaced.
That's in no particular order.