Though the field of bionics first gained social awareness through the pop-culture phenomenon, The Six Million Dollar Man (based on the Martin Caidin novel, Cyborg), the desire to replace missing or failing body parts goes back to the time of the Egyptians. From the simple peg leg or articulated claw to the ultra-modern mind-controlled prosthetic replacements of today, Andre and Richard look at what has been, what now exists, and what may come in the world of enhanced humans.