I found this in the book The Golden Ratio by Mario Livio:
(It's a test that was used by University of Maine mathematician George Markowsky to determine if there is a preference for a particular ratio but I couldn't help reading it as a comic and found it had an interesting oscillating effect in the flow.)
This one was sent to me by ABCOLAB #2 contributor Charles Newton,
(As a comic, it might seem insignificant but reading it slowly, and imagining it much larger, I found it surprisingly powerful.)
...and speaking of fractals, you might get into this: http://vimeo.com/13886600
Also see: Abstract Comics Accidental - Part 1