Israeli company Lumus has produced a pair of futuristic but otherwise totally wearable glasses that enable you to interact with the world via AR. They also display 1280 x 720 HD video -- also 3D-capable -- without anyone able to see what you're watching.
How they work:
Light pumps in the earpieces send and refract light down the lens. This moves the electronics away from the eyes, offering a lighter, more streamlined experience. The lenses are transparent and display an apparent 87-inch screen about ten feet away. Because each eye display works independently, you can also view 3D video."But wait!" you say. "Why not contact lenses? Aren't those sexier and infinitely more discreet?"
Don't worry, those are coming.