I might actually pick up Kinect when it's on clearance for $50. Navigating Xbox 360 menus by motion sounds interesting, and some of the games look good. Project Milo seemed like it could be cool, but there are rumors it has been canceled (officially it hasn't, just reports saying that development has been put on hold for now).
Microsoft has said they are commited though, planning to spend a few hundred million dollars on advertising.