The Hero2 is the latest GoPro camera. It's higher resolution and faster processor makes for incredible footage.
When making a good video it helps if to have footage from every angle. The camera can be mounted on a helmet, wrist, chest, pole, board and many other places.
The GoPro Hero 2 requires a class 10 memory card because it has a faster processor. An LCD backpack lets you review the footage right after filming.