Check out this Youtube video of the world’s first dynamically balanced walking robot. The company is Anybots and they’ve brought forth Dexter and Monty. These guys are robots just under 6 feet tall and weigh in between 135-160 pounds.
The neat thing about the two is that they are dynamically balanced. Sure Asimo from Honda is also balanced, but his movements are programmed. If you push on him he’ll tip over. Not Dexter and Monty. They actually walk on their own by balancing themselves and falling forward as they take each tentative step. If you push on them they’ll step back and regain their balance so they don’t fall over.
Just like humans.
Here’s much more information on the theory and practice behind these bots, that Youtube video of the walk, a short video of Dexter Jumping and a choice quote from the web site after comparing to Asimo:
Dynamically balancing—the way we walk—is much harder. It looks fairly smooth when we do it, but it’s really a controlled fall. At any given moment you have to think (or at least, your body does) about which direction you’re falling, and put your foot down in exactly the right place to push you in the direction you want to go. Practice makes it seem easy to us, but it’s a very hard problem to solve
[Found on Neatorama]