Hello, Minority Report UI. Goodbye, touchscreen PCs.
Just a quick note to finish the year: Researchers at USC have developed a method for controlling World of Warcraft with Microsoft's Kinect camera. This is such a better way to control a non-text-based application. Imagine being able to do mouse-heavy work just with finger and body gestures. Imagine triple- and quad-display systems fueled by this sort of interface, with you pushing new windows around with the flick of a wrist.
I wonder if and how Microsoft benefits from open source projects like this apart from the camera sale. Regardless, 2011 should be a crazy year for camera-oriented computing innovation!