Dean Kamen's Robot Arm

Dean Kamen showed some video of the impressive, mind-controlled prosthetic robot arm he's invented.

Kamen's arm, dubbed "Luke" is an incredibly sophisticated bit of engineering that's lightyears ahead of the clamping "claws" that many amputees are forced to use today. The arm is fully articulated, giving the user the same degrees of movement as a natural arm, and is sensitive enough to pick up a piece of paper, a wineglass or even a grape without mishap.