I tried out the wii yesterday at a so-cal gamestop. the controller really is tiny, and fits perfectly in your hand. as a cursor controller it felt responsive and intuitive to use. the audio feedback is cool, and the "rumble" when you land the cursor on a button feels amazing. unfortunately, creating a "mii" was the most fun I could have with it [looks for an einstein named "booger" at sunset & western] as ExciteTruck really blows. the game is floaty and controls like it's on rails. I could win races, but never felt like I was really in control as the truck never really feels like it's gripping the ground. once you accelerate, it feels like you're channeled down the narrow track almost no matter what you do, like the slippery driving equivalent of auto-aim in an fps. I don't know if that makes sense, but it's bad. in my 10-15 minutes of playing around, I never found it intuitive, and never really "got" it. the graphics are mediocre, it looks like an average cube game, and the situation was made worse by it being blown up on an hdtv.
anyway, hopefully they'll get some better demos in soon. the functionality of the controller seems exciting when you're using the console interface, they just need to swap out crappy Excite Truck with Zelda or something that really shows it off.
