I've always kind of liked this one.
I guess there's probably some sort of art snob name for this exercise, but I just call it a-picture-of-my-dog-that-I-drew-without-looking-at-the-paper- or-lifting-my-pencil-off-the-page. Come to think of it, the art snob name might have been a bit more practical. In all honesty, I think I ended up lifting my pencil off the page once. I'm not Pablo friggin' Picasso, after all.