I saw this quite some time ago and was pretty stoked about it when I saw how he uses it for a Virtual Reality head tracking system. I am really surprised that more game companies haven't started developing games using his idea and selling them with 3D glasses. Just watching the perspective when he hooks up the sensors to the camera is simply amazing!
Can you imagine the smilies on Brad's Electronic Projects just POPING out at you?
<--- SUPER 3D dude!
Years ago I built his $14.00 steadycam (listed on his site) and it worked great. That was long before he developed his wiimote stuff. I gotta hand it to the guy, he's creative!