When I saw this back in August, I laughed in delight. I think it is a rather clever idea, well executed. (It’s by Farley Katz, and was in the New Yorker, Aug 11th ’08. (Link is to cartoon bank where you can get it.))
Actually, it reminded me of the delicious fractal I photographed for you and that we discussed here not long ago. That one was real, this one imagined, but nevertheless rather good.
Some Related Asymptotia Posts (not exhaustive):