BigDog: The Most Advanced Quadruped Robot on Earth

That video has been around for a while and is actually very out of date. Here is a more humanized version of it now:

http://www.youtube.com/watch?v=VXJZVZFRFJc

Its impressive, but what I find depressing is that for it to be portable they have to use internal combustion engines (that have the side effect of making it look sound like a mosquito).

Its sad because I guess that makes fossil fuels still the most energy dense and practical portable form of energy.

Its am amazing achievement on the robotics side though.

Some more footage: http://www.youtube.com/v/VXJZVZFRFJc