Jack Lemmon and Walter Matthau in The Odd Couple (1968)

Walter Matthau, Monica Evans, and Carole Shelley in The Odd Couple (1968)

Monica Evans and Carole Shelley in The Odd Couple (1968)

Walter Matthau and Iris Adrian in The Odd Couple (1968)

Walter Matthau and Herb Edelman in The Odd Couple (1968)

Jack Lemmon, Walter Matthau, Herb Edelman, John Fiedler, Larry Haines, and David Sheiner in The Odd Couple (1968)

Jack Lemmon, Walter Matthau, Monica Evans, and Carole Shelley in The Odd Couple (1968)

Walter Matthau, Herb Edelman, Larry Haines, and David Sheiner in The Odd Couple (1968)

Jack Lemmon, Walter Matthau, and Robert McGinnis in The Odd Couple (1968)