"OCZ's latest brainchild is the Actuator, a device which tracks movement of your eyes, monitors brain waves and picks up facial muscle movements, it uses these recorded signals to link them to input commands on the computer, allowing you to play Tetris or even a first person shooter like UT2004. We visited the OCZ booth at Cebit where they had a live demo, (view)read our (video)report on this impressive technology which will change the way you interact with your PC!"Here's a YouTube movie in which Tony Leach from OCZ shows of the capabilities of the Actuator:
This device should be available by the end of the year for about $300.