Walking on water? Just add corn starch to water and you get a substance that exhibits both liquid and solid properties. When gentle forces are applied, it behaves like a liquid. When greater forces are applied, it acts like a solid.

Watch the video of a few guys from Spain walking on water. Then read the Wikipedia article to learn more.

http://www.makezine.com/blog/
http://en.wikipedia.org/wiki/Non_Newtonian_fluid  ¶ 6:27 AM