gallery of vintage robots featured in Popular Science.
This robot, called "The Beetle" weighed 170,000 pounds and cost $1.5 Million in 1962. It was originally designed as a "mechanic's suit" for some kind of half-baked nuclear-powered airplane. There are more awesome pictures in the original article, particularly of the "pilot" sitting behind 2 feet of leaded glass.
The whole thing looks like something out of the movie Aliens.