J. Michael Straczynski currently has his own line of comicbooks, Joe's Comics, published through Top Cow Productions.
So far, this line includes Rising Stars and Midnight Nation, both written by JMS.

Pencils on Rising Stars are done by Christian Zanier, and by Gary Frank on Midnight Nation.

Previously, Straczynski (co-)wrote Babylon 5 comics for DC Comics, based on his own tv-show.