The linked video seems to be a little misleading. The actual procedure doesn't add on a second identically connected brain to a body, and it doesn't allow for 'body transplants.' What is does is allow a brain to survive without its own body's blood flow, and there are other, artificial ways to do so (or cryonics, as well).
"It's entirely misleading to suggest that a head transplant or a brain transplant is actually really still connected in anything except in terms of blood stream to the body to which it has been transplanted. It's not controlling or relating to that body in any other sort of way." ~Dr. Steven Rose
What is does is allow a brain to survive without its own body's blood flow, and there are other, artificial ways to do so (or cryonics, as well).
Cryonics doesn't allow a brain to survive without its own body's blood flow.
Cryonics doesn't allow a brain to survive, period.
Cryonics involves killing a brain (or preparing a dead brain) in such a way as to maximize the chances that some future technology can extract its instantiated mind.
A worthy goal, but a different one.
Amazing video. This is really "out there" medical research that actually worked, and not surprisingly, was closed down.
http://www.vbs.tv/newsroom/dr-white-s-total-body-transplant-2-of-2--2