Your Body as the Clicker - Gestural remote control...

Gizmodo reports that at JVC recently showed off a television which can be remote-controlled by hand gestures and claps. Just the basics - volume, channel, maybe mute or pause - all detected with a small camera and microphone. The implementation is important (if it's unreliable, the system could be infuriating), but the idea is fascinating from a usability point of view. No more searching for the remote, or even keeping it out all the time (they can be eyesores). On the other hand, control can now be shared among all viewers simultaneously, which is a brave new world in the home-theater milieu - will there be power struggles? Or will the original purpose of the remote control, the elimination of any physical effort whatsoever, win out and result in everyone being too lazy to life a finger...?