The GoPro is a tiny sports camorder that is waterproof and shock proof and comes with lots of accessories that you can purchase to meet your needs. The HD hero comes in two variants, the 960 and the 1080p. I suggest getting the 1080 at about $300. You get more shooting options and more compatible accessories.
With this camcorder, you can literally put it anywhere (if you have the right accessories)! Out of the box, it comes with a head strap that you can use to strap it to your head and 4 sticky mounts that you can mount to wherever you'd like. You can buy an additional tripod mount for tripods, helmet mount for secure helmet mount, a wrist strap, or even a chest strap.
The things you can record with this gadget is endless. Think of all the activities you can record. All you'd have to do is mount it somewhere and press record. Be it scuba diving, snorkeling, skydiving, snowboarding, anything! Hope onto youtube to see this baby in action.
This tiny camcorder does not have an LCD screen, so you don't really know what you are shooting until you load it onto your computer. This makes sense, since you probably won't be looking at the LCD screen anyways if you're just going to mount, record, and forget. But they do sell the LCD screen for about $80 and I do recommend getting it. You can make sure that you're recording what you want to record, and then take turn off the LCD to conserve battery.
The HD Hero as an aperture of f/2.8. This is better than my Pentax Lens, which can only go up to f/3.5. What this means is that it'll shoot pretty well in low-light settings. The lens is a super wide angle lens so you'll get a fish-eyeish effect, which can actually look pretty cool. If you're into modding, you can get custom lens at ragecams.com that can change the viewing angle, aperture, and more.
Another cool feature with the 1080p variant is that you can shoot 720p at 60fps. This makes for a smoother video and great if you want to slow down some footage. Check this video out:
Once snowboarding season comes, I'll post some of my videos up.
The Gopro has many accessories, but none of which you have to buy. You can buy it a little at a time, but the start out pack gets you well equipped. At $300 for an awesome sports camcorder/camera, this is a Gotta Gadget