Even when you know how it's done, a well-performed cups-and-balls routine is pure magic. Enjoy this entertaining history of one of the world's oldest (it dates backs to ancient Egypt) and most enduring tricks. My favorite part of this excellent presentation is the video of magic great Dai Vernon's routine (Click on the Performances section).

http://feeds.boingboing.net/~r/boingboing/iBag/~3/Pj82YFJDJHs/a-history-of-cups-and-balls-ma.html