Optical Illusions are a great way to make your mind work or it simply messes with your eyes. The one above, find the man. In this article is a pretty cool one as well...

This is a pretty cool illusion. If your vision is 20/20 you see Albert Einstein, near-sided eyes will see Marilyn Monroe.

Handy tip if you want to see Marilyn move picture away from you and squint. Fun.