Another innovative, but hopefully soon-to-be mainstream gadget was The Tobii Eye Tracking Sensor.
The sensor replaces your mouse, allowing your eyes to select the icons or links, scroll and zoom on maps, and throw boulders at bad guys (as shown in the booth’s demonstration). The response is surprisingly fluid and natural. Much as Kinnect before it, the technology is bound to get lots of attention from developers.
Watch the video here.