Marlon Brando and Robert Duvall in The Chase (1966)

Marlon Brando, Robert Duvall, and Angie Dickinson in The Chase (1966)

Al Pacino, Robert Duvall, and James Caan in The Godfather (1972)

Robert Duvall and John Marley in The Godfather (1972)

Robert Duvall and Joanna Moore in Countdown (1967)

Robert Duvall, Barbara Baxley, and Joanna Moore in Countdown (1967)

Robert Duvall and Steve Ihnat in Countdown (1967)

Robert Duvall and James Caan in Countdown (1967)

Robert Duvall and James Earl Jones in A Family Thing (1996)

Al Pacino, Robert Duvall, Richard Bright, and Tom Rosqui in The Godfather (1972)

Marlon Brando, Robert Duvall, Richard Conte, and Victor Rendina in The Godfather (1972)

Al Pacino and Robert Duvall in The Godfather (1972)

Robert Duvall, Andy Garcia, Amy Irving, Lou Diamond Phillips, and Erik Estrada in A Show of Force (1990)

Robert Duvall and Klaus Maria Brandauer in The Lightship (1985)

Tommy Lee Jones and Robert Duvall in Lonesome Dove (1989)

Robert Duvall, Ally McCoist, Kirsty Mitchell, and Robert Findlay in A Shot at Glory (2000)

Robert Duvall and Tess Harper in Tender Mercies (1983)

Robert Duvall and Natasha Richardson in The Handmaid's Tale (1990)

Robert Duvall, Rob Lowe, William H. Macy, Aaron Eckhart, Maria Bello, and Katie Holmes in Thank You for Smoking (2005)

Robert De Niro and Robert Duvall in True Confessions (1981)

Mark Wahlberg, Robert Duvall, Joaquin Phoenix, and Eva Mendes in We Own the Night (2007)