Ecogeek has an article about wind power robots made by Dutch artist Theo Jansen. He calls them Strandbeest (I don't know why) and his walking creations look like huge SODA Constructor robots in real life and he lets them walk across a beach. He seems to have scored at last one BMW commercial with his wind powered robots. There's cool youtube videos of Strandbeests on the site too! Lots of pics and such out on the web too. His website strandbeest.com seem to be down, tho. You can find more info in Strandbeest on Google.