Credits

• 1995 · Bye Bye Love as Walter Sims
• 1994 · The Road Home as Walter Babineaux
• 1993 · Message from Nam as Ed Wilson
• 1992 · Citizen Cohn as Joseph N. Welch
• 1992 · Jack's Place as
• 1991 · The Perfect Tribute as Warren
• 1990 · The Exorcist III as Father Joseph Kevin Dyer
• 1989 · The Final Days as Leonard Garment
• 1983 · Special Bulletin as John Woodley
• 1982 · St. Elsewhere as Donald Westphall
• 1982 · Tomorrow's Child as Anders Stenslund
• 1981 · Skokie as Mayor Albert J. Smith
• 1981 · The Pursuit of D.B. Cooper as Brigadier
• 1981 · True Confessions as Dan T. Campion
• 1981 · Inchon as President Harry S. Truman (voice)
• 1980 · The Ninth Configuration as Col. Richard Fell
• 1979 · Salem's Lot as Dr. Bill Norton
• 1979 · Blind Ambition as Charles Shaffer
• 1979 · Backstairs at the White House as Pres. Calvin Coolidge
• 1977 · MacArthur as President Harry S. Truman
• 1977 · The Amazing Howard Hughes as Noah Dietrich
• 1977 · Mary White as William Allen White
• 1976 · Harry S. Truman: Plain Speaking as Harry S. Truman
• 1976 · Eleanor and Franklin as Louis Howe
• 1975 · A Moon for the Misbegotten as Phil Hogan
• 1975 · Attack on Terror: The FBI vs. the Ku Klux Klan as Ralph Paine
• 1975 · The Legend of Lizzie Borden as Hosea Knowlton
• 1974 · Things in Their Season as Carl Gerlach
• 1974 · Lincoln as General George C. McClellan
• 1974 · Indict and Convict as Timothy Fitzgerald
• 1972 · The Snoop Sisters as Milo Perkins
• 1972 · Kung Fu as
• 1972 · M*A*S*H as Lt. Bricker
• 1972 · Banyon as
• 1972 · The Trial of the Catonsville Nine as Father Daniel Berrigan
• 1971 · Goodbye, Raggedy Ann as David Bevin
• 1971 · McMillan and Wife as
• 1971 · Nichols as Harlan B. Flanders
• 1970 · The Grasshopper as Jack Benton
• 1968 · Hawaii Five-O as Professor David Stone
• 1968 · Hawaii Five-O as Dr. Alexander Kline
• 1968 · Hawaii Five-O as Dmitri Rostov
• 1968 · Hawaii Five-O as Byers
• 1968 · Hawaii Five-O as Joe Connors
• 1968 · Hawaii Five-O as Bernie Ross
• 1967 · Mannix as
• 1967 · Cimarron Strip as
• 1966 · Mission: Impossible as
• 1964 · Daniel Boone as Col. Richard Lackland
• 1956 · Tony Awards as Self - Winner
• 1951 · Hallmark Hall of Fame as Harry S. Truman