As shown at the Atlanta Competition, Dean's group is working on a prosthetic arm. He has a
five minute talk and demo on the TED website.
http://www.ted.com/index.php/talks/view/id/82
If you are not familiar with TED, it is, next to Chief Delphi, the most amazing site with the most amazing people and stories.
One of my favorites is:
Eva Vertes, a most amazing teenager and an inspiration
http://www.ted.com/index.php/talks/view/id/12
Very educational!