One of the best fan films of all time is Sandy Collora’s Batman: Dead End. The year it was released, it took the San Diego Comic Con by storm. The next year, Collora planned to follow up with a trailer of his version of World’s Finest.
That video was never seen by fans at the show. That year the publishers cracked down on “unauthorized” use of characters, which forced Collora to release the film online. If you haven’t seen it, take a gander.
Still makes me wonder what might have happened if Collora were given the chance to write and direct this team-up.