I bought this camera to mount in my airplane and to wear on my helmet when kayaking. As it turns out, I stopped flight instructing about the same time I bought this camera, and now it is semi-permanently mounted on my motorcycle.
The camera works pretty well on the bike - it's probably not as good as the Hero, but it's less than half the price. In daylight, resolution, frame rate and picture quality are decent, but don't expect to film your independent movie on this camera. I have occasionally noticed rather pronounced waviness in the image when using the camera on my motorcycle.
After sunset, forget it. The aperture is way too small to shoot in anything less than indoor lighting. Also, the sound quality is very poor. It won't record conversations, and the (sweet!!!) V-twin engine on my bike sounds like I'm stirring a paint can filled with marbles :( I have read that the poor sound quality is the trade-off for having a waterproof camera (there is a rubber plug over the mic, apparently). If so, that's a fair trade, because in a year of riding rain or shine, I've had zero leakage.
All in all, it's a great camera for the price. It has a few flaws, but nothing terrible, and for under a hundred bucks, you can't go wrong.