Actor and filmmaker Jim Cummings -- who's taken apart fragile alpha males in Thunder Road, The Wolf of Snow Hollow and the brand-new thrillerThe Beta Test -- is more than happy to lose himself in the labyrinth of David Fincher's Zodiac, the director's 2007 epic dramatization about the hunt for the serial killer who terrorized San Francisco in the late '60s and early '70s. It's no mystery: Your genial host Norm Wilner is really happy with this episode.