Look at this painting of the face of Marilyn Monroe.
These are tiny images of President Kennedy, who was allegedly one of her lovers.
Kim Dong Yoo is an amazingly precise artist. He makes paintings that are image mosaics of tiny figures--the same one for each painting. These aren't computer generated. He does them all by hand. You can see more of his work here, including paintings of Audrey Hepburn made of tiny Gregory Pecks and John F. Kennedy made of tiny Marilyn Monroes.
-via My Modern Met