I've recently started playing a pretty great game called Spelunky. It's a platformer with retro graphics and awesome randomized gameplay. It was written by one of the guys from Bit Blot, so you know it's got to be good.
Overall, the game is very fun. Easy gameplay (very casual, no real storyline besides the opening scene (which is also random!)), great graphics, and a very polished feel. The only thing I don't like about the game is the amount of buttons it requires. Even on a gamepad, it's pretty bad. Fortunately, you don't need to press most of the keys very often.
So the next time you're sitting around, bored out of your mind, give Spelunky a try. I highly recommend it!
