Mighty Optical Illusions is an always interesting site to visit. Some of my favorite illusions at their site are there Lego illusions. They have a page which links to samples of optical illusions made out of Lego blocks that they have gathered.
However, while the illusions are fascinating, I can't help but wonder how many Dads swipe their kids Legos on Christmas morning so they can play M. C. Escher with them?
