- Dick Van Dyke
- Rev. Clayton Brooks
- Pippa Scott
- Natalie Brooks
- Tom Poston
- Mr. Stopworth
- Edward Everett Horton
- Hiram C. Grayson
- Bob & Ray
- Hugh Upson / David Chetley / Sandy Van Andy / Walter Chronic / Paul Hardly / Arthur Lordly (as Bob and Ray)
- Vincent Gardenia
- Mayor Quincey L. Wappler
- Barnard Hughes
- Dr. Proctor
- Graham Jarvis
- Amos Bush
- Jean Stapleton
- Mrs. Wappler
- Barbara Cason
- Letitia Hornsby
- Judith Lowry
- Odie Turman
- Sudie Bond
- Cissy
- Helen Page Camp
- Mrs. Watson
- Paul Benedict
- Zen Buddhist
- Simon Scott
- Mr. Kandiss
- Raymond Kark
- Homer Watson
- Peggy Rea
- Mrs. Proctor
- Woodrow Parfrey
- Tobacco Executive
- George Mann
- Bishop Manley
- Charles Pinney
- Col. Galloway
- M. Emmet Walsh
- Art
- Gloria LeRoy
- The Hooker
- Eric Boles
- Dennis
- Jack Grimes
- TV Stage Manager
- Walter Sande
- Tobacco Executive
- Harvey Jason
- Hypnotist
- Bob Newhart
- Merwin Wren
- Spiro Agnew
- Self
- Robert Christopher
- Television Director
- Murray Cline
- Milkman
- Michael Cornelison
- Protester
- Bob Elliott
- Hugh Upson / David Chetley / Sandy Van Andy (uncredited)
- Stan Gottlieb
- Man on Operating Table
- Ray Goulding
- Walter Chronic / Paul Hardly / Arthur Lordly (uncredited)
- Lynn Guthrie
- Townsman
- Hubert H. Humphrey
- Self
- Ted Knight
- Mr. Slick
- Norman Lear
- Crying Man
- Maureen McCormick
- Talking Doll
- Pat Nixon
- Self
- Richard Nixon
- Self
- Burt Prelutsky
- Tourist Asking for Directions
- Mrs. Burt Prelutsky
- Tourist's Wife
- Ronald Reagan
- Self
- Charles White
- Senator Sildge
- Jerry Whittington
- Wilber Scott
- Glenn Yarbrough
- Working Stiff
- Louis Zorich
- Douglas Truesdale