At the moment I am working on two comic book miniseries. The first is a crossover -- Teenage Mutant Ninja Turtles/Ghostbusters. I'm co-writing that one with Tom Waltz (writer of the TMNT ongoing series at IDW.) I'm also working on Galaxy Quest: The Journey Continues, a comic book sequel to the film.
Oh! And I've co-written three issues of Marvel's New Warriors (10-12) with Chris Yost; the first of those should be out in October.