The "Hybrid Assistive Limb" (HAL) suit from Japanese firm Cyberdyne (which coincidently is also the company in Terminator 2) was deployed using only the leg sections, though the company is also working on full-body models. The assisted-walker jobs shown reportedly weigh 10kg including batteries, and are said to be of value in helping the injured or feeble get about. Cyberdyne will lease a set of robo-legs for 220k yen (£1360 at the moment) per month.
Cyberdyne founder Prof Yoshiyuki Sankai of the University of Tsukuba "Cybernics" lab, has also revealed that scientists there are working on a "next generation type Continuous Flow Artificial Heart" and a "Humanoid Control Project". Details are confidential, but stay tuned!