Current shows I like:
Downton Abbey
Shameless (US)
Dexter
Homeland
Once Upon A Time
Grimm
Bones
Castle
The Big Bang Theory
Being Human (US and UK but I prefer UK)
Lost Girl
Deception
Smash
Haven
I never get tired of reruns of:
Friends
Frasier
Coupling
The Vicar of Dibley
As Time Goes By
And I've caught these on DVD/when they aired and love them:
Wonderfalls
My So Called Life
Fringe
Dollhouse
Veronica Mars (but not so much the 3rd season...)
Six Feet Under
Upstairs, Downstairs (older series and the newer one)
Gilmore Girls
Beauty and the Beast (80's series)
It looks like I watch a lot of TV. I probably do, but only a couple of hours a day really- I don't watch them all at once, by any means! I'll DVR shows and watch an episode or two after work to relax and de-stress.
I've never been into reality TV. I watch TV to escape reality. Not that reality TV represents reality! But I find it easier to escape into a fictional world.