http://www.sporcle.com/games/states.php
I'll post my results in a minute.
EDIT:
Just finished. And no, I didn't cheat.
We played that game off Friends a few years ago at school where you had to try and name all the states in 6 minutes. For some reason they stuck with me and that, coupled with the fact I watch a lot of American sport/TV etc., means I can name them all pretty easily.