I was reading this and I found a link to this. (Actually, there's a whole entry devoted to it, but the permalink wouldn't work for me...)
Go look at it. Just scroll through the pictures if you really can't be bothered to read the whole page. I did that the first time, and then I went back and looked again and read the whole thing.
I was fascinated, and somehow I feel compelled to show this to other people...
