The 2008 Rheology Bulletin had links to movies that showed off the shear-thickening properties of cornstarch/water solutions. The mixture of 1 part water to 1.5-2 parts cornstarch has become known as oobleck, which was a fanciful fluid invented by Dr. Seuss. After the jump, several videos of oobleck experiments.
Hat tip: Rheology Bulletin
Spanish science TV show (featured in January 2008 Rheology Bulletin)
Michigan Tech experiment (featured in July 2008 Rheology Bulletin)
Steve Spangler on the Ellen show
American TV show Mythbusters