If the name Cyberdyne doesn't immediately ring a bell, its HAL (Hybrid Assistive Limb) robotic suit sure will. Here at CEATEC, we bumped into these folks who kindly offered to strap us onto their latest prototype arm - a slightly smaller variant of the one installed on Cyberdyne's current suit. Most of the HAL's main part was strapped to the outer side of our upper arm with velcro, while our wrist was tied to the much smaller extendable piece; both parts were hinged together with a power unit.
Engadget, Cyberdyne HAL robotic arm hands-on (video)