Graphics don't matter and blah blah, but please stop arguing that the Wii has current-gen graphics. It clearly does not. I'm glad we had this argument before and people tried to tell me that the Wii's architecture was superior so it was probably much more powerful than an xbox, despite the specs saying otherwise.
The controller, btw, is not innovative. Hear me out, please. It's old technology, but the risk of using it as the main control scheme is obviously paying off. I personally would like the choice to use a normal controller as well because I don't feel like the Wiimote/nunchuck is the ideal controller for every type of game.
So, what is then required is another controller. I don't own a gamecube so I would have to buy one of those or a classic. I don't think the classics are as comfortable to use as PS3 or 360 controllers, and I never liked the GC's lack of symmetrical buttons. I think PS3's controller is more suited to more game types because the motion sensing is quite good and it's still a controller. That said, Time Crisis, a PS3 exclusive, will include a gun that acts just like the Wiimote except better because it uses 2 sensors. I think 4 would be ideal so that the entire TV was mapped out, but we'll see how it works. So far I'm disappointed with the Wiimote's results.
Anyway, the control scheme for the Wii is definitely attracting casual gamers but many people that play a lot of videogames will get a 360 or PS3 as well, I think (no, I don't care if you won't...I think most will). The Wii is last-gen technology other than the controller that has a sensor. That's all it is, you know. PS3 has as good motion sensing. Copycat or not, it's obviously not hard to do.