"Serpentine!" Screenwriter-director Andrew Bergman regales Gilbert and Frank with behind-the-scenes stories from two of cinema's most unforgettable comedies, "Blazing Saddles" and "The In-Laws," and looks back on working with showbiz legends George Burns, Red Buttons, Maximillian Schell, Jack Warden and (notably) Marlon Brando. Also, Johnny Carson turns down the Waco Kid, Richard Libertini "destroys" Alan Arkin, Gilbert writes a fan letter to Lon Chaney Jr. and Andrew's dad pens gags for Victor Borge. PLUS: "Honeymoon in Vegas"! The genius of Bob and Ray! Deconstructing "Duck Soup"! Mel Brooks sends up "The Caine Mutiny"! And Bert Parks sings to a Komodo dragon! 

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