If you haven't tried it before, a fun (and rather cheap) little game called Audiosurf. A puzzle game where the tracks are generated according to the music you choose, with variations on game mode according to the ship type you choose. A demo was around for a while, dunno if it's still available or not now.
If you are bored, it's a pretty fun game.
http://www.youtube.com/watch?v=8ZzJ3QB-YKU is a short gameplay vid, if you are interested.
Asides from this game, tf2 and l4d, I don't play a whole lot of other games these days (asides from a short mechwarrior 2/4 revival stint recently.)
