A great video by Mitch Kapor is doing the rounds. Part of the wave of things washing away the cave paintings we have of user input and computer output. It is interesting to see it hooked up to Second Life, which as chair of Linden Lab you would expect to see. However this shows that the technology and software is out there, and is coming to fruition to track our movements and get gesture based, controller free computing up and running. Like Project Natal on the 360 this starts to make things more accessible rather than us chimping on controllers and keyboards all the time.
Of course there is the issue of feedback, of muscle memory and patterns formed from understanding the resistance physics gives us, but that does not mean these are not going to be useful technologies. In fact having watched people (and also doing it myself) even when using a regular controller moving the body to somehow impart that extra turn, leaning back to slow down more means that there may well be a place for the hybrid solution. Controllers for precise feedback, knowing the limit of a steering lock in a car etc, but enhanced by body movement.

See more as it appears at http://www.handsfree3d.com/