Nigel Ackland had part of his arm "chopped off" after a smelting accident six years ago. For the last few weeks he's been using the just-launched bebionic3 carbon fiber hand, which he demonstrates here.
It is somewhat disconcerting when he manually dislocates his wrist at the 30 second mark. And he says, of one grip, "This is one that scares children and upsets my wife." But otherwise it's entirely graceful and, as a testament to where we stand in the world of prostheses, heartening.