Escher is my favorite artist because you can stare at one of his paintings forever trying to figure it out.

http://www.poster.net/escher-mc/escher-mc-drawing-hands-7400022.jpg

This is Escher...

http://brainwagon.org/images/escher.jpg
https://reich-chemistry.wikispaces.com/file/view/escher-relativity-woodcut-medium.jpg
That was one of Eschers most famous pieces.
http://www.designdemocracy08.com/files/ippostimages/escher3.jpg

More will be coming soon! :)