I need some new games. Recommend me some.

I expect people would prefer just to list games they like, but in case anyone's interested, I tend to like puzzle-based games, especially free / very cheap ones.

I'm currently enjoying WordUp, which is kind of a cross between Boggle and Numbr and gets pretty challenging once you get to the 5x5 word squares. It crashes like a drunk 8-year-old behind the wheel of a bumper-car, but takes less than a second to start/load again, so that's not as much of a pain as it sounds.