Move over skynet, DARPA are coming…
Below is a youtube video of an experimental robot called ‘BigDog’.
Its balance is best demonstrated about half way through when a researcher tries to knock it over, very impressive stuff from DARPA, the people who gave us the Internet.
EDIT: Is it me, or does it have a worrying similarity to this creature from Half Life 2?


That’s really impressive balance control! It just needs some sort of acoustic dampening otherwise you’ll hear it coming a mile away. From the later footage, it seems the buzzing is from the power supply. Hmm…
Cheap PSU maybe?