This is pretty darn neat, a look at the most advanced bionic arm.

Jonathan Kuniholm's right arm terminates in a carbon-fiber sleeve trailing cables connected to a PC. He has no right hand, unless you count the virtual one on a display in front of him. The CG hand, programmed to look like silvery stainless steel, moves through a sequence of motions: spherical grasp, cylindrical grasp, thumb to forefinger -- all in response to signals from Kuniholm's muscles picked up by electrodes in the sleeve.