Coba jelasin Karya dari Jason Robards dong

Long Day's Journey Into Night (1956)

Toys in the Attic (1960)

Big Fish, Little Fish 	(1961)

But For Whom Charlie (1964)

We Bombed in New Haven (1968)

A Moon for the Misbegotten (1973)

A Touch of the Poet (1977)

You Can't Take It With You (1984)

A Month of Sundays (1987)

Long Day's Journey Into Night (1988)

Park Your Car in Harvard Yard (1991)

Long Day's Journey Into Night (1962)

Tender Is the Night (1962)

Act One (1963) (sebagai George S. Kaufman)

A Big Hand for the Little Lady (1966)

Hour of the Gun (1967) (as Doc Holliday)

The St. Valentine's Day Massacre (1967) (sebagai Al Capone)

The Night They Raided Minsky's (1968)

Once Upon a Time in the West (1968)

Julius Caesar (1970) (sebagai Brutus)

Rosolino Paternò: Soldato..., aka Operation Snafu (1970)

Tora! Tora! Tora! (1970) (sebagai Gen. Walter Short)

The Ballad of Cable Hogue (1970)

Murders in the Rue Morgue (1971)

Johnny Got His Gun (1971)

The War Between Men and Women (1972)

The Death Merchants aka Tod eines Fremden, aka The Execution (1973)

Pat Garrett and Billy the Kid (1973) (sebagai Lew Wallace)

A Boy and His Dog (1975)

All the President's Men (1976) (sebagai Ben Bradlee) Academy Award, Best Supporting Actor

Julia (1977) (as Dashiell Hammett) Academy Award, Best Supporting Actor

Melvin and Howard (1980) (as Howard Hughes) Academy Award nomination, Best Supporting Actor

The Legend of the Lone Ranger (1981) (as President Ulysses S. Grant)

Something Wicked this Way Comes (1983)

The World of Tomorrow (1984)

America and Lewis Hine (1984)

Bright Lights, Big City (1988)

Dream a Little Dream (1989)

Empire of the Air: The Men Who Made Radio (1991)

The Trial (1993 film) (1993)

The Adventures of Huck Finn (1993)

The Great American West (1997)

Enemy of the State (1998)

They Drew Fire: Combat Artists of World War II (2000)

Abe Lincoln in Illinois (1964) (sebagai Abraham Lincoln) Emmy Award nomination, Outstanding Single Performance by an Actor in a Leading Role