Supernatural hands down Fringe is pretty nice too I want to watch Walking Dead but haven't yet, although everyone's been telling me I should 3rd rock from the sun
House has been kind of out of it the past few seasons. I used to love the show, but it's just gone downhill. Right now, some of the best on TV would be Chuck, Human Target, Sons of Anarchy and Castle.
My favorite is Parenthood, Friday night lights, sanctuary, x factor, rescue me, The OC, That 70's show, The pacific, Gilmore girls, xena, gossip girls and many other.