J.H. Williams III collaboration with writer Alan Moore on Promethea was beautiful and mind-bending… some of the most gorgeously drawn meta-comics ever attempted. Being a super-genius, Moore gets much of the (well-deserved) credit for the success of Promethea, but few other artists could have done so much with his psychedelic scripts.
Click the above image to see the full-size version on the site I found it on.