Meet the Lumus DK-40: yet another pair of glasses you can put on to get things done. This a wireless, stand alone device with an optical engine providing a 25 degree FoV, onboard OMAP processor, and a camera. It also has a motion sensor and runs Android. It has True Augmented Reality capability.
The device has a SDK and allows an Android phone to serve as a wireless remote control. Still not something I would wear outside but the idea looks interesting.