It is not often I see a video clip that impresses me. The following link has clip of some of the robotics work that will help people that have lot/never had arms. It is really cool to see where technology is at.
I'm too lazy to embed the video myself - click through to enjoy.
Dean Kamen's Robot Arm Grabs More Publicity | Gadget Lab from Wired.com:
(For the McLuhan fans... this is a case of a technology being a literal extension of man.)