Matsushita, a company out of Japan, has developed a suit with virtual muscles. While it won't help you lift semis one-handed, it will aid in the rehabilitation of stroke victims suffering from partial paralysis by moving their limbs. Slated for 2009 release, the suit will run about $17,000, but should become cheaper with mass production.
Gizmodo tip: pick one of these up before they hit stateside and no one needs to know the suit isn't powered by nuclear reactions, providing 500 tons of lifting/throwing power. Just try to avoid any real fights.