See more pictures on this site: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=118048
(ww143 is the inventor of the chassis on every walker we built)
This is a Lego Mindstorms biped that we built, it is very small, it's only 15 centimeters high.
It took 3 hours to build and it is very stable.
It has no program, we steer it by remote control.