Lol, I have too many favorite TV shows. Most of them I don't watch live though, they're either watched On Demand or online when I have free time.
Supernatural
Psych
Criminal Minds
The Closer
Glee
The Vampire Diaries (a really guilty pleasure )
Burn Notice
Law and Order (all versions - though I don't watch any of them consistently)
I think that's it. There are others I watch on occasion, but these are the usual 'must sees' as far as keeping up with the seasons.
And my alltime favourite has to be Outrageous Fortune, its a New Zealand made show and its freakin awesome!They barely show it even here though so I've started buying it on DVD... LOVE IT!
Supernatural( a little overly obsessed with this one)
True blood (because I have read all the books)
Bones (again I also love the books)
Fringe
Real World (started watching this from the fist episode in 1992,can't stop now)
Nitro Circus
Forensic files