Human Controller Interface
There is no doubt in my mind that the future controller of game consoles will be your body movements and your voice. Microsoft is leading the way with Kinect - the technology will need years to be flushed out, but it isn't terribly difficult to predict that the human interface is here to stay.
Higher resolution cameras will drive the adoption of much smoother and more sophisticated usage models that feel as natural as Microsoft promised it for Kinect. Clearly, Kinect is not the technology that fits all types of games. There is a good chance that the good old motion controller will stay for a while until a camera and AI system can detect movements in detail that is comparable to today's controllers, but the days of this technology is clearly numbered and this next generation of controller technology should be exciting.