I love Type Racer.
I do too. Unfortunately this keyboard has seen one too many coffee spills to be in tip-top competition shape. Well, plus the fact that these keyboards kind of suck even when they're new.
My addiction of choice is Dice Wars (there's a multiplayer lookalike called KDice but the gameplay is different). You will like or dislike it in similar proportion to liking Risk. The same site has some other decent games, tho the one I play the most in short bursts is Chat Noir.
If you like Chat Noir, then you'll love Orisinal. I think there was a thread on the blue just about Ferry's games with people posting their faves. They tend to be (very well done) one-trick ponies, and whether any pony strikes your fancy is the question.