Optical illusions

I don't know about everyone else, but I love a good optical illusion! It's probably got something to do with the way your senses tell you one thing that's incompatible with logic - geek! And one of the best-known artists who created optical illusions was Escher. Now Lego have paid homage to Escher with this great creation :

Awesome!

The original site for this was http://www.andrewlipson.com/lego.htm which has plenty of lego fun! Man, they make me feel so ordinary in comparison - I always just tried to make a house.
For more cool illusions, see this blog. I especially like the sand sculptures!