I just got the chance to use a Wii (not mine) yesterday. It's a impressive machine, though the games that make the best use of the controller are also, as yet, kind of simplistic. My favorite is actually the Wii Sports bowling game, which replicates the experience of real bowling to a remarkable degree, though it's a little easier than the real thing. Wii Play Lazer Hockey is nice too-- the true successor to Pong.