Walter Matthau: Diamond in the Rough
- Curs: 1997
- País: United States of America
- Gènere: Documentary
- Estudi: Janson Media, Wombat Productions
- Paraula clau:
- Director: Gene Feldman
- Repartiment: Walter Matthau, Ossie Davis, Edward Dmytryk, Julie Harris, Jack Lemmon, Charles Matthau