I never watch TV anymore, but I download House religiously.
I also watch random episodes of the many South Park, Family Guy, and Futurama DVDs that my roommates have. But this is always watching with other people, I never actively go to watch them for some reason. I've also watched the last three seasons of Grey's Anatomy but I got bored halfway through the last season...it got way too soap-opera-y.
There are lots of things that would entertain me if I had a decent TV/cable though, which is why I'm very glad I don't...I save so much time every day. (includes: animal/nature documentaries, how it's made, so you think you can dance, CSI, criminal minds...you get the idea I'm sure....I could watch discovery all day I think)