There are loads of good ones. Although I think for the most part you'd want to stick to Call of Duty 3 and Red Steel. I dunno if you'd like Elebits (fantastic in my opinion even though it's a game that is...younger I suppose), The Legend of Zelda: The Twilight Princess (I've heard good things, not played it myself), or Wario Ware: Smooth Moves. Wario Ware is a pretty sweet multiplayer/minigames game. Oh. Also, you might like Excite Truck.
They're not completely unfounded either. Trying to play multiplayer is like trying to bullseye womprats no bigger than two meters in my T-16 back home. As for the single player mode though, it's much easier. When you have an entire T.V. screen to work with it becomes easier. Essentially, the smaller area you have to control yourself the harder it is.