Yeah, it would have been better if we could have seen the head tracking from the first person perspective. It looks a little clumsy, but it's hard to tell if that's just because we're getting a look at it from the side or if it's actually clumsy. The guy also didn't seem to test depth perception at all, which would have been nice to see.
@dbot
You put on a headband or pair of glasses with two or more infrared LEDs, then place a 2nd wiimote in a stand pointed at your head. You could do it by strapping a single wiimote (no need for two) to your head, but it would be more massive than LEDs and therefore more awkward.
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