Yo-Yo Ma and Lil Buck video of the dance performance
Sometimes I just love stumbleupon. I find great art links there.
Drawing with white or colors on black can shock students into exploring values in a different way.
Here is a drawing with salt video:
http://mixingreality.com/2011/07/mixingreality-com-video-of-the-day-bashir-sultani-art-with-salt/