
Watching video of yourself bombing down a mountain trail on your bike is fun, but watching it in 3-D is even better. GoPro’s HERO system combines two 1080p cameras inside a mountable 5-by-2.5-inch waterproof plastic housing to make the world’s smallest high-definition 3-D camera. The cameras connect by a synchronization cable, which allows the user to operate both as a single camera with one set of control buttons. $100 (cameras, $260 each)