What do you see?

I have always been really intrigued to optical illusions and abstract face art.  I think that optical illusions that are well done are some of the coolest things ever!  I have always been jealous of the artists that have the ability to take random object, scenes, body parts, etc. and put them together to create an image of something real such as a face or an animal.  I posted some of my favorite ones below.  Enjoy!