A friend of mine at work pointed out this site to me, and it's Albert Einstein optical illusions.

http://www.moillusions.com/2007/10/m...einsteins.html

Step back about 6-8 feet from your computer and as you look at it, walk closer to it.

I thought it was pretty damn cool.

 

Man, some of those murals would really mess with my head. And I'm glad I'm not drinking in the houses with the painted targets and things....