I used this one for all of these video.
On a car :
http://www.youtube.com/watch?v=5UMij_F1OZc
On a boat :
http://www.youtube.com/watch?v=RARTUDE3nMw
http://www.youtube.com/watch?v=wuUDPEnc8_E
http://www.youtube.com/watch?v=gQzTzqJGdF4
Not bad at all, just the sound that could be better.
It's really waterproof (watch 1st boat vid) and unbreakable (roll-in while fitted on the car, and no issue).
The friend of mine who owns this cam fitted it on his motorbike and lost it at more than 200kmh at the end of a straight line on a track : the cam was 100% OK !