GoPros are great and have heaps of mounting options.
check out
www.gopro.com
The only downsides are that they have a very basic interface, are a very wide angle camera (also a good thing) and they are not very good in darker conditions.
They do good quality video and you can get pretty good stills from it as well.
http://www.youtube.com/watch?v=PynwK5cS_1w