I've been playing around with video cameras in the office here for a good year with varying degress of success.
The GoPro we use is great - when it's behaving. But I've had too many sessions where it doesn't like the SD card I fed it, the batteries die as you're leaving pit lane or you record a perfect lap, but with the camera pointing at the sky, or the tank. Doh!
So this is an example of a GoPro working well, onboard the 2011 Kawasaki ZX-10R at Losail circuit in Qatar. Shame about the riding but you can't have it all..