Anyone fancy a game of My Team, Your Team? (Probably over MSN, as I imagine it would be difficult to sort turns in-thread?)
For the unacquainted, it's a drawing game where you come up with a drawing that beats the last drawing your competitor/s did. It's the game they're playing at The Superest. It's better than iSketch. Actual drawing skill not required; I always resort to stick figures myself.