In his gigantic body of work, Arno Rafael Minkkinen uses the human body in a truly ingenious way. Instead of the person being the center of focus, Arno cleverly aligns parts of the human body seamlessly with the rest of the picture.
Phylogenetic Tree of Life
The OpenLearn site used to offer this phylogenetic chart in the shape of a tree as a free poster, but no more. They do have an online version of this same illustration, expandable and with links and an explanatory guide:
Tree of Life - Open University.