We posted the 10 Optical Illusions in 2 minutes viral ad for Samsung Soul cell phone a while ago - the first optical illusion (the dinosaur) was so popular that Claudio Branno and the rest of the ad team decided to bring him out for a tour around England.
I can't get enough how "Dino" turns his head to look straightatcha! Hit play or go to Link [YouTube] - Thanks Claudio!
Previously on Neatorama: make your own (smaller) version Dragon Paper Sculpture
http://www.grand-illusions.com/opticalillusions/dragon_illusion/
I believe it ate it's mother... :(