If you ever lose faith in humanity's capacity for creativity and talent, just remember there are people like Chan Hwee Chong in the world. He was commissioned by Faber Castell to recreate famous paintings, and boy did he ever. Each of these portraits is created using just a single line that spirals outwards from the center. Amazing!
István Orosz is a Hungarian artist who specializes in complex images. The ones you see here are called anamorphoses which require the viewer to use specialized devices at certain angles to see an image. It is hard to make a simple anamorphic image, but he makes creating complex anamorphoses seem effortless.