Ditto, there's something very funny about the voice of god being so jaded and deadpan.
My Fav:
Tell a person you're the Metatron and they stare at you blankly. Mention something out of a Charlton Heston movie and suddenly everybody's a theology scholar! May I continue uninterrupted?
Another vote for that role as my favorite. The bedroom scene at the beginning would make a great actor's audition piece.