The famous no-BS magicians, doing a famous trick with transparent glasses and a whole lotta fast hand-moving :o
http://www.youtube.com/watch?v=wI8PC3hUIEc
I love when they show how a trick works, only to add something at the end.
"Transparent Cups & Balls" is a classic P&T bit, and here's another clip (http://www.youtube.com/watch?v=_elMzgM-bV4) of them doing it -- bonus, Teller talks (!) (?)
Wow, did they really get "kicked out of the Magic Castle" for doing C&B with clear cups? Even more important, was the final item a lime, or a potatoe (http://www.youtube.com/watch?v=7jKKwess_BY)? ;D
Funny and revealing interview with Penn Jillette: Stephen Colbert (http://www.youtube.com/watch?v=4F6DNHpO9aU) (01Nov2006).