The STUPID thing about GoPro and pretty much every other POV cam is that none of them offer different lenses. This is stupid IMO. Not everyone wants 100% of their videos to look as if they were shot through a hotel door peephole. It would be easy, for example, for GoPro to manufacture a bayonet-mount (or even a screw-on) interchangeable lens so you could have a more normal (non-fisheye) point of view.
Actually the Contour works with any standard lens; you just clip on a certain attachment they make and can then screw on standard photography lens. I put on a UV filter partly for UV filtering and partly for protection.
Another nice thing about the Contour is that you can buy a certain cable which allows you to record while it's plugged in. So you can record basically forever (literally around 8 hours nonstop with a 16 GB card) if it's plugged into a 5V power source. So I mount it to my handlebars and connect the cable to a 12V -> 5V DC-DC converter running off my bike's electrical system.
I haven't owned a GoPro so I don't know if they can do that too. I would guess yes...?