Scientists at the Defense Advanced Research Projects Agency have devised a prosthetic arm called the Proto 2 that can play the piano and do other complex motions through pure thought control. This development increased expectations that one day a robot like seen in popular science fiction movies like "Terminator" and "Robocop" and "Star Trek" could be a reality. That day is far off, but the Proto 2 could be in the market in a matter of years. This is a great sign of hope for those who have have lost limbs to one day fully function again.
Link
