Special Guest Stars Dean Winters as Dennis Duffy James Marsden as Criss Chros Guest Stars Chris Parnell as Dr. Leo Spaceman Kristen Schaal as Hazel Wassername Mary Steenburgen as Diana Jessup Billy Bush as Himself Tyler Merna as Brock Erik Jensen as Cjokula Chris Barnes as Herb Ben Davis as George Treadbury Eric Martin Brown as Godfrey Jessup Russ Armstrong as Jed Co Starring Heidi Armbruster as Woman