For those that arn't keen on paying for GoPro's marketing, have a look at this.
I did a bit of research and read reviews before I bought one for myself. It looks like a rip off of the GoPro 2, but people who have compared them side by side say the video quality is better on the Action Pro, and no software glitches
I couldn't be happier with the quality of build and video and all the accesories.
For $135 you also get the back pack and remote controler as well as all the assorted mounts.
http://www.geeks.com/details.asp?invtid=CM-7200so have a look into it for yourself, it's another option.