Hey man, bit.trip is pretty cool, I originally played the free trial on my Wii and hated that it ended so it's good to finally have the full version. I like it a lot, very interesting neo 8-bit rhythm game.
Bully is very fun. Kinda the hih-school Grand Theft Auto. I love pulling pranks and stuff, my favorite being punching teachers to get on red alert and trow down marbles to make em all trip when they're chasing me xD I recommend that too. They're both cheap and fun :D