Microsoft Project Natal - You are the controller

"E3, you need to know, Microsoft unveiled Natal Project, a 3D motion sensing and facial/voice recognizing "controller", it will let you play Xbox 360 games use the body, no controller required(watch the video!) - the only experience needed is life experience.
Microsoft demoed racing games, fighting games, and simple sports games using full body spatial recognition that let you hold up virtual steering wheels, duck, weave and deliver punches, and kick goals using nothing more than their physical actions."

Source: Like Cool