RunBot

RunBot- the fastest robot on 2 legs. -
a 2D biped walking robot developed in Bernstein Center for Computational Neuroscience(BCCN) in Göttingen.

from NewScientistTech.com:
"The robot is controlled by a simple program that mimics the way neurons control reflexes in humans and other animals. Unlike most other two-legged robots, RunBot has few sensors and can detect just two things -- when a foot touches the ground, and when a leg swings forward."