2021Jacques Tati, tombé de la luneMovie
2019Yellowface: Asian Whitewashing and Racism in Hollywood(archive footage)Movie
2018These Dead Souls(archive footage)Movie
2004Unsolved Mysteries Volume 1: UFOsHostMovie
2002Butt-Ugly MartiansStoat Muldoon (voice) · 26 episodesShow
2001Killer BudThe GoochMovie
2001Recess: School's OutSuperintendent (voice)Movie
1999MumfordRobert StackMovie
1999Sealed with a KissSumner EthridgeMovie
1999Hercules: Zero to HeroNarrator (voice) (archive sound)Movie
1999The Y2K CrisisHostMovie
1998HerculesBob (voice) · 65 episodesShow
1998BASEketballRobert StackMovie
1997The Angry BeaversNarrator (voice) · 1 episodeShow
1996Beavis and Butt-Head Do AmericaAgent Flemming (voice)Movie
1996Suddenly SusanRobert Stack · 1 episodeShow
1993Diagnosis: MurderPeter McReynolds · 1 episodeShow
1991The Return of Eliot NessEliot NessMovie
1991Unsolved Mysteries: UFOS26 episodesShow
1991The Real Story of Baa Baa Black SheepLt. Littleboy (voice)Movie
1990Unsolved Mysteries: Ghosts34 episodesShow
1990The Fanelli BoysRobert Stack (uncredited), Kyle Hadley · 1 episodeShow
1990BlossomRobert Stack · 1 episodeShow
1990Joe Versus the VolcanoDr. EllisonMovie
1988Unsolved MysteriesHost · 561 episodesShow
1988Dangerous CurvesLouis FacianoMovie
1988Caddyshack IIChandler YoungMovie
1988Plain ClothesMr. GardnerMovie
1987Perry Mason: The Case of the Sinister SpiritJordan WhiteMovie
1987Korea: The Forgotten WarHost · 2 episodesShow
1986Big TroubleWinslowMovie
1985Midas ValleyDrew HammondMovie
1985Hollywood WivesGeorge Lancaster · 3 episodesShow
1985My Kingdom For...Movie
1984Murder, She WroteChester Harrison · 1 episodeShow
1984Brothers1 episodeShow
1984George WashingtonGeneral Stark · 3 episodesShow
1983Uncommon ValorMacGregorMovie
1982HotelLewis Blackwood, Charles Vandoor · 1 episodeShow
1981Falcon CrestRoland Saunders · 5 episodesShow
1981Strike ForceCaptain Frank Murphy · 20 episodesShow
1980Airplane!Captain Rex KramerMovie
19791941Maj. Gen. Joseph W. StilwellMovie
1979Undercover with the KKKHost - NarratorMovie
1978Second WindFrançois DavisMovie
1976Most WantedCaptain Linc Evers · 23 episodesShow
1975Murder on Flight 502Captain LarkinMovie
1975Adventures of the QueenCapt. James MorganMovie
1974The Strange and Deadly OccurrenceMichael RhodesMovie
1973Police Story2 episodesShow
1970Story of a WomanDavid FrasierMovie
1968The Name of the GameDan Farrell · 26 episodesShow
1968LauraMark McPhersonMovie
1967The Danny Thomas HourAngelo (Businessman) · 1 episodeShow
1967Action ManJim BeckleyMovie
1967The Corrupt OnesCliff WilderMovie
1966Is Paris Burning?General SibertMovie
1965Asylum for a SpyJames Andrew CongersMovie
1963The CaretakersDr. Donovan MacLeodMovie
1962The Lucy ShowAgent Briggs · 1 episodeShow
1961Alcatraz ExpressEliot NessMovie
1960The Gun of ZangaraEliot NessMovie
1960The Last VoyageCliff HendersonMovie
1959The Scarface MobEliot NessMovie
1959The UntouchablesEliot Ness · 118 episodesShow
1959John Paul JonesJohn Paul JonesMovie
1958Westinghouse Desilu PlayhouseEliot Ness · 1 episodeShow
1958The Gift of LoveWilliam 'Bill' BeckMovie
1957Panic ButtonJerry CookMovie
1957The Tarnished AngelsRoger ShumannMovie
1956Written on the WindKyle HadleyMovie
1956Great Day in the MorningOwen PentecostMovie
1955Good Morning, Miss DoveDr. Tommy BakerMovie
1955LauraMark MacphersonMovie
1955The 20th Century Fox HourMark MacPherson · 1 episodeShow
1955House of BambooEddie KennerMovie