We're not living in a Robocop world yet, but thanks in part to the many amputees coming back from overseas conflicts, DARPA and various research institutions and private contractors are creating advanced new forms of prosthetics.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.