I don't own a Kinect yet, but I'm planning to get one because my daughter is a massive Sonic The Hedgehog fan and Sonic Free Riders is a Kinect exclusive. If you're really a fan of a certain game character or series, you'll buy whatever you have to in order to own all the games.
I actually got my original Xbox to play Shenmue 2 because I loved Shenmue on the Dreamcast, so if we have to get a Kinect in order to get Sonic Free Riders so my daughter's Sonic collection can be complete, then that's what we'll have to do.
Anyway I have seen someone look silly on the Kinect. A guy was trying out a demo of Child of Eden at a video game store in my neighborhood.
Even though Child of Eden looks like a very cool game and the soundtrack by Genki Rockets is great, it's just impossible for anyone to look cool doing all those frantic arm movements.