[ShorsHammer]

At that speed you can measure the "echos" of light, using femto-photography and some computing, it's possible to image objects around corners, outside of the cameras line of sight.

More info: http://web.media.mit.edu/~raskar/cornar/

Theres a few videos around of Raskar demonstrating this.

[d--b]

Wow. Thought this would be used for experimental physics, not another spying device! Cool stuff though.