Oh, and something I've been watching a bit on Youtube recently: Blood Bowl
Football/Rugby crossed with high fantasy and plenty of violence. Lots of dice rolls, and dice rolls mean lots of borked situations, and lots of rage and drama. It's a game that once you get into it, could easily inspire keyboard tossing. Perfect game for having a few drinks and beating the snot out of your friends with. It supports both LAN and hotseat, so if you had a couple more computers (even a midrange laptop can run it I'm sure.) You could hold a small tournament over your wifi, with the favored/randomly picked matches going on the projector.
Link
Edit: And the game has full support for organizing everything you'd want to do in it. Seasons, tournaments, and one-off's are easily organized within the game's UI.