Modern comedy guru Ivan Reitman ("Ghostbusters," "Stripes," "Meatballs") is in final talks to direct "Super Ex" for Regency Enterprises. Former "Simpsons" writer Don Payne penned the screenplay, and the "story centers on a man who discovers that the needy, manipulative woman he’s dating is a superhero. When he breaks up with her, she uses her superpowers against him." No cast has been set yet, but Mr. Reitman knows who his go-to guy should always be: Bill Murray!