Credits

• 2005 · Law & Order: Trial by Jury as Matthew Sherwood
• 2000 · Bull as Robert 'The Kaiser' Roberts
• 1999 · The West Wing as Talmidge Cregg
• 1994 · Clear and Present Danger as President Bennett
• 1993 · Tales of the City as Edgar Halcyon
• 1993 · Dr. Quinn, Medicine Woman as Walt Whitman
• 1992 · Majority Rule as Walter Simms
• 1992 · Housesitter as George Davis
• 1991 · Regarding Henry as Charlie Cameron
• 1991 · Class Action as Quinn
• 1990 · The Bonfire of the Vanities as Mr. McCoy
• 1988 · The Bourne Identity as David Abbott
• 1988 · China Beach as
• 1988 · The Unbearable Lightness of Being as Chief Surgeon
• 1988 · Necessary Parties as Grampa Mills
• 1986 · L.A. Law as Lawrence O'Neil
• 1985 · The Twilight Zone as (segment "The Star")
• 1985 · Alamo Bay as Wally
• 1984 · Murder, She Wrote as Tim Carver
• 1983 · The Right Stuff as Lyndon B. Johnson
• 1982 · The Thing as Garry
• 1981 · My Champion as Dr. Myron Shapiro
• 1980 · Popeye as The Taxman
• 1980 · On the Nickel as Sam
• 1978 · The Word as Henri Aubert
• 1978 · Dallas as Brooks Oliver
• 1977 · Logan's Run as Rem
• 1977 · The Fitzpatricks as
• 1977 · Code R as Jack Douglas
• 1974 · Earthquake as Dr. Harvey Johnson
• 1974 · Little House on the Prairie as
• 1974 · Rex Harrison Presents Stories of Love as Fred
• 1974 · The Six Million Dollar Man as Lester Burstyn
• 1974 · The Six Million Dollar Man as Dr. Martin Davis
• 1973 · The Snoop Sisters as Shriver Danforth
• 1972 · The Waltons as Lester Morgan
• 1971 · Columbo as Sheldon Hays
• 1971 · Great Performances as Charles Bisley
• 1970 · Night Gallery as Uncle George (segment "Pickman's Model")
• 1970 · The Young Rebels as
• 1969 · Room 222 as
• 1968 · Lancer as
• 1968 · Hawaii Five-O as Dr. David Forbes
• 1967 · Mannix as Don McGrath
• 1967 · The High Chaparral as Henry Simmons
• 1967 · Coronet Blue as The Rector
• 1967 · Ironside as Daniel Keyes
• 1967 · Ironside as Hartz
• 1966 · Mission: Impossible as Alex Pierson
• 1961 · The Defenders as Dr. Leon Elm
• 1961 · The Defenders as Dr. Finch
• 1959 · Bonanza as Judge MacIntyre
• 1959 · Bonanza as Thatcher
• 1958 · Naked City as Brickwell
• 1955 · Gunsmoke as Joseph Graham
• 1951 · Hallmark Hall of Fame as John Heywood
• Future · Roger Williams: Founder Of Rhode Island as Roger Williams
• 2003 · Realizing The Right Stuff as Self
• 2001 · 61* as Ford Frick
• 1999 · Cookie's Fortune as Jack Palmer
• 1998 · The Sleep Room as
• 1997 · A Smile Like Yours as Dr. Felber
• 1996 · The Evening Star as Hector Scott
• 1994 · Trapped in Paradise as Clifford Anderson
• 1994 · Is There Life Out There? as Grandpa Walter
• 1993 · Love, Cheat & Steal as Frank Harrington
• 1992 · Teamster Boss: The Jackie Presser Story as O'Connell
• 1991 · Babe Ruth as Jacob Ruppert
• 1991 · The Great Pretender as Owen Milner
• 1990 · Kaleidoscope as Arthur Patterson
• 1990 · A Son's Promise as Paw Paw
• 1990 · Kojak: Flowers For Matty as Garrett Fitzsimons
• 1989 · Music Box as Harry Talbot
• 1989 · Cross of Fire as George Oberholtzer
• 1988 · Far North as Uncle Dane
• 1987 · When the Time Comes as Harold
• 1987 · Desperado as Malloy, Nora's Dad
• 1986 · License to Kill as Howard Webster
• 1986 · Houston: The Legend of Texas as Col. John Allen
• 1986 · Lily as John Farnsworth
• 1986 · Monster in the Closet as General Franklin Turnbull
• 1986 · The Best of Times as Herbert ("The Colonel")
• 1983 · Through Naked Eyes as Patrolman
• 1983 · Who Will Love My Children? as Dick Thomas
• 1982 · A House Divided: Denmark Vesey's Rebellion as Captain Vesey
• 1981 · The White Lions as Vreeland
• 1981 · Jacqueline Bouvier Kennedy as Hugh Auchincloss
• 1980 · HealtH as Colonel Cody
• 1980 · The Long Days of Summer as Josef Kaplan
• 1979 · Promises in the Dark as Dr. Walter McInerny
• 1979 · Mrs. R's Daughter as Frank Randell
• 1979 · Ebony, Ivory and Jade as Ian Cabot
• 1979 · Strangers: The Story of a Mother and Daughter as Wally Ball
• 1978 · The Gift of Love as William Schuyler
• 1978 · Sergeant Matlovich vs. the U.S. Air Force as Col. Benton
• 1978 · Tartuffe as Tartuffe
• 1977 · Mary White as Sir James Barrie
• 1977 · Exo-Man as Wallace Rogers
• 1977 · Eleanor and Franklin: The White House Years as Harry Hopkins
• 1976 · The Call of the Wild as Simpson
• 1975 · Forget-Me-Not Lane as Charles Bisley
• 1974 · The New Land as
• 1974 · The Terminal Man as Dr. Arthur McPherson
• 1974 · A Touch of the Poet as Jamie Cregan
• 1973 · Showdown as Art Williams
• 1972 · The Trial of the Catonsville Nine as
• 1972 · The Great Northfield Minnesota Raid as Manning
• 1971 · The Devil and Miss Sarah as Appleton
• 1970 · R.P.M. as Perry Howard
• 1969 · The File on Devlin as John Heywood
• 1968 · Rachel, Rachel as Niall Cameron
• 1968 · Of Mice and Men as Slim
• 1963 · Art, what is it? Why is it? as Narrator
• 1956 · The Battle of the River Plate as Swanston - Lookout, HMS Ajax (uncredited)