I don't play any games, but my thoughts have always been that the Ninendo stuff was more cartoony, but often more 'fun'. But, that said, the most popular games for people over 15 seem to be Halo and Guitar Hero (a 40 minute discussion on the implications of kids hearing Sabbath and Zepplin through that gamewas had at my christmas lunch yesterday) which are on the 360.

That said, the Wii's controller idea seems really cool. It would be awesome if they had a cycling game and you could attach the controller to the crank.