I never feel there's anything I can't do with comics. There are certain things in comics that you can't do in any other medium: for instance, in Mister Wonderful, Marshall's narration overlaps the events as they're going on. That would be difficult in film; you could blot speech out with a voiceover, but it wouldn't have the same effect. That's always of interest, to see what new things you can do in comics form.