theory11 — Magic Tricks & the World's Finest Playing Cards

Devil's Cola Bottle

Haha, I was just looking into this effect yesterday too. I've heard it is very good and has been used by many pro's like Penn and Teller, Cyril, etc.

Hefty price though.....

Adrian
 
The effect is not as good as it looks,

You have to drop something into the bottle and have the spectator move around the bottle, might be worth 100, but not 1000.

People who knows about science will figure this one out in no time.