- Irma La Douce (1963) – Produced and Directed By: Billy Wilder Screenplay By: Billy Wilder and I.A.L. Diamond
- Some Like It Hot (1959) – Directed By: Billy Wilder Screenplay By: Billy Wilder and I.A.L. Diamond Cast: Marilyn Monroe, Tony Curtis, Jack Lemmon, George Raft, Pat O’Brien, Joe E. Brown
- The Apartment (1960) – Directed By: Billy Wilder Written By: Billy Wilder & I.A.L. Diamond Cast: Jack Lemmon, Shirley MacLaine, Fred MacMurray, Ray Walston, Jack Kruschen, David Lewis, Joan Shawlee, Naomi Stevens, Hope Holiday, and Edie Adams
- Avanti! (1972) – Produced and Directed By: Billy Wilder Screenplay By: Billy Wilder and I.A.L. Diamond Based on the Play By: Samuel Taylor Cast: Jack Lemmon, Juliet Mills, Clive Revill, Edward Andrews
- The Fortune Cookie (1966) – Produced and Directed By: Billy Wilder Written By: Billy Wilder and I.A.L. Diamond Cast: Jack Lemmon, Walter Matthau, with Ron Rich, Cliff Osmond, and Judi West
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