I watch too many comedies. I need help choosing a new show to watch, but it must be a drama. Any suggestions?

I'd like to watch a show that is either new and looks like it'll be around for a long time (3 or more seasons), or a show that has all previous seasons easily accessible (netflix, hulu plus, etc). Preferably a show that is still on the air!

I really haven't watched anything in the "drama" category since Lost or 24, although I'm not sure they would count in that genre. Regardless, I'd like something completely different than the shows I currently watch, which are Community, 30 Rock, SNL, Family Guy, Stewart, Colbert, New Girl, and South Park.

Suggestions? I've heard both Dexter and Breaking Bad are fantastic!

Something to consider: I am in college and do not have access to cable. I have Hulu Plus and Netflix instant watch. I go home once every few months, but I'd need some way to watch current episodes besides filling up my DVR at home and pissing my parents off.

Edit: Wow, I have a lot of TV shows to watch. Thanks, everyone!