> Oh, so they have scaled up small plastic toys that were available > when I was a kid ... Yeah, I had those too, they'd waddle down a book. I remember a couple that looked very Mr Potatohead-ish It was the look of it in the video more than anything, using a treadmill eg compared with http://www.otago.ac.nz/neurozoo/dynamic%20walking.html How about a stair walker based on the Slinky then ? Extra points if it can go back up ;-)) --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .