A bunch of iPhone games, among them the destructively awesome Tap Tap Revenge 2, have received updates to include Facebook Connect functionality. What does that mean for you? Networking. Delicious networking.
Facebook Connect allows you to link your game, with all its scores and stats, to your Facebook account, which in turn lets you connect to other people who are playing the game. You'll be able to share your high score, see which friend is playing which game, and, as always, block your boss from seeing exactly what you're up to during work hours.