Jack Lemmon
Harry Hinkle
Walter Matthau
Willie Gingrich
Ron Rich
Boom Boom Jackson
Judi West
Sandy Hinkle
Cliff Osmond
Purkey
Lurene Tuttle
Mother Hinkle
Harry Holcombe
O'Brien
Les Tremayne
Thompson
Marge Redmond
Charlotte Gingrich
Ann Shoemaker
Sister Veronica
Ned Glass
Doc Schindler
Archie Moore
Mr. Jackson
Howard McNear
Mr. Cimoli
Harry Davis
Dr. Krugman
Lauren Gilbert
Kincaid
Sig Ruman
Professor Winterhalter
Noam Pitlik
Max
Maryesther Denver
Nurse
Judy Pace
Elvira
Helen Kleeb
Law Firm Switchboard Operator and Receptionist
Bartlett Robinson
Specialist #1
Ben Wright
Doctor
Dodie Heath
Nun
William Christopher
Interne (as Bill Christopher)
Robert P. Lieb
Specialist #2
Martin Blaine
Specialist #3
Herbie Faye
Maury - the Equipment Man
Billy Beck
Maury's Assistant
Lisa Linsky
Ginger Gingrich (as Lisa Jill)
John Todd Roberts
Jeffrey Gingrich
Keith Jackson
CBS Football Announcer
Herbert Ellis
TV Director (as Herb Ellis)
Robert DoQui
Man in Bar (as Bob Doqui)
John Anderson
Abraham Lincoln (uncredited)
Jim Brown
Running Back - Number 32 (archive footage) (uncredited)
Daniel Elam
Bar Patron (uncredited)
Rudy Germane
Commuter (uncredited)
Chester Jones
Cook (uncredited)
Chuck Schodowski
Stadium Cameraman (uncredited)
Jon Silo
Tailor (uncredited)