I think motion gaming's just about run its course... It seems makers of serious games tack it on when Sony/MS asks them to, and games specifically made to utilize motion controls usually lack in other categories. All in all, there's been few games 1) for which the definitive way to play is with motion and 2) a great game on its own right.
I've never played a game with Kinect or Move, but from what I've read KZ3's come close to pulling off 1). I'm still on the fence about getting a Move, but as of now I just see no compelling reason to get one.
PSN: chenguo4
Current playing: No More Heroes