I was a bit Impressed by Johnny Lee's Wii hacks:
Of course, I don't expect this degree of coolness from console games. But still, a lot of Wii-games seems to be created by people with a keyboard-and-mouse approach: In Boom Blox you have to make a throwing motion, but the effect is the same as if you had just clicked a button. And this is actually known as one of the better games for Wii.
So, which games for Wii is putting the various controls to the best use?