My friend Mark and I have been closely watching a company called Vholder for their self contained video cameras that you can mount on just about anything. A few months ago they came out with a 720p version called the "Contour" and within the last few days they have come out with a new version that shoots at full 1080p. Its now on my wish list...cant wait to try some crazy type shots, the only problem now is finding a place that actually has them in stock- they are selling faster than they can make them!
Also, if you decide to get one, DO NOT GET THE CONTOUR (Thats the 720 version), get the Contour 1080p!
Contour 1080p at BhPhoto