Filmography85 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2025 | Freakier FridayMovie | Ryan | 74 |
| 2024 | NCIS: OriginsSeries | Older Leroy Jethro Gibbs (voice) (uncredited) | 73 |
| 2024 | NCISverse: The First 1,000Movie | Self | 73 |
| 2022 | Joe Montana: Cool Under PressureSeries | Self - Narrator (voice) | 71 |
| 2019 | The Kelly Clarkson ShowSeries | Self | 68 |
| 2019 | The WildMovie | Self | 68 |
| 2016 | The American WestSeries | Self | 65 |
| 2015 | The Late Show with Stephen ColbertSeries | Self - Guest | 64 |
| 2015 | The Late Late Show with James CordenSeries | Self | 64 |
| 2014 | NCIS: New OrleansSeries | Leroy Jethro Gibbs | 63 |
| 2013 | The Arsenio Hall ShowSeries | Self | 62 |
| 2012 | Steve HarveySeries | Self | 61 |
| 2011 | Certain PreyMovie | Lucas Davenport | 60 |
| 2010 | Justice League: Crisis on Two EarthsMovie | Superman (voice) | 59 |
| 2009 | Weather GirlMovie | Dale | 58 |
| 2008 | The Bonnie Hunt ShowSeries | Self | 57 |
| 2006 | The Megan Mullally ShowSeries | Self - Guest | 55 |
| 2004 | The Tony Danza ShowSeries | Self | 53 |
| 2003 | NCISSeries | Leroy Jethro Gibbs | 52 |
| 2003 | Jimmy Kimmel Live!Series | Self | 52 |
| 2003 | Freaky FridayMovie | Ryan | 52 |
| 2002 | Local BoysMovie | Jim Wesley | 51 |
| 2001 | The Amati GirlsMovie | Lawrence | 50 |
| 2001 | The Legend of TarzanSeries | Bob Markham (voice) | 50 |
| 2001 | Crossfire TrailMovie | Bruce Barkow | 50 |
| 2001 | And Never Let Her GoMovie | Thomas Capano | 50 |
| 1999 | Family GuySeries | Leroy Jethro Gibbs (voice) | 48 |
| 1999 | The West WingSeries | Simon Donovan | 48 |
| 1999 | I'll Remember AprilMovie | John Cooper | 48 |
| 1998 | From the Earth to the MoonSeries | Wally Schirra | 47 |
| 1998 | Fear and Loathing in Las VegasMovie | Magazine Reporter | 47 |
| 1997 | The ViewSeries | Self | 46 |
| 1997 | The First to GoMovie | Jeremy Hampton | 46 |
| 1997 | CasualtiesMovie | Tommy Nance | 46 |
| 1996 | The Rosie O'Donnell ShowSeries | Self | 45 |
| 1996 | StrangersSeries | Mark | 45 |
| 1995 | JAGSeries | Leroy Jethro Gibbs | 44 |
| 1995 | The Last SupperMovie | Dominant Male | 44 |
| 1995 | Charlie GraceSeries | Charlie Grace | 44 |
| 1995 | Original SinsMovie | Johnathan Franye | 44 |
| 1995 | Magic in the WaterMovie | Jack Black | 44 |
| 1994 | Chicago HopeSeries | Jack McNeil | 43 |
| 1994 | Wyatt EarpMovie | Sheriff Johnny Behan | 43 |
| 1994 | Natural Born KillersMovie | Mickey Knox in TV | 43 |
| 1993 | Harts of the WestSeries | — | 42 |
| 1992 | The Tonight Show with Jay LenoSeries | — | 41 |
| 1992 | Cold HeavenMovie | Alex Davenport | 41 |
| 1991 | DillingerMovie | John Dillinger | 40 |
| 1991 | Till There Was YouMovie | Frank Flynn | 40 |
| 1991 | Fourth StoryMovie | David Shepard | 40 |
| 1991 | Long Road HomeMovie | Ertie Robertson | 40 |
| 1991 | Shadow of a DoubtMovie | Charles Spencer | 40 |
| 1989 | Sweet Bird of YouthMovie | Chance Wayne | 38 |
| 1988 | The PresidioMovie | Jay Austin | 37 |
| 1988 | Stealing HomeMovie | Billy Wyatt | 37 |
| 1987 | Summer SchoolMovie | Mr. Freddy Shoop | 36 |
| 1987 | Dear America: Letters Home from VietnamMovie | (voice) | 36 |
| 1986 | Let's Get HarryMovie | Harry | 35 |
| 1986 | Prince of Bel AirMovie | Robin Prince | 35 |
| 1986 | The Deliberate StrangerSeries | Ted Bundy | 35 |
| 1985 | MoonlightingSeries | Sam Crawford | 34 |
| 1984 | Tuareg: Desert WarriorMovie | Gacel Sayah | 33 |
| 1983 | Intimate AgonyMovie | Tommy | 32 |
| 1982 | St. ElsewhereSeries | Robert Caldwell | 31 |
| 1981 | Entertainment TonightSeries | Self | 30 |
| 1981 | Goliath AwaitsSeries | Peter Cabot | 30 |
| 1981 | Flamingo RoadSeries | Field Carlyle | 30 |
| 1980 | Flamingo RoadMovie | Fielding Carlyle | 29 |
| 1980 | The Dream MerchantsSeries | Johnny Edge | 29 |
| 1979 | Beyond the Poseidon AdventureMovie | Larry Simpson | 28 |
| 1978 | CentennialSeries | Captain John McIntosh | 27 |
| 1978 | Comes a HorsemanMovie | Billy Joe Meynert | 27 |
| 1978 | Little MoMovie | Norman Brinker | 27 |
| 1978 | Getting MarriedMovie | Howie Lesser | 27 |
| 1977 | The Love BoatSeries | Doug Bradbury | 26 |
| 1977 | The Hardy Boys / Nancy Drew MysteriesSeries | — | 26 |
| 1977 | Eleanor and Franklin: The White House YearsMovie | Robert Dunlap | 26 |
| 1976 | Laverne & ShirleySeries | — | 25 |
| 1976 | All's FairSeries | — | 25 |
| 1975 | Saturday Night LiveSeries | Self - Host | 24 |
| 1974 | Police WomanSeries | Paul Donin | 23 |
| 1974 | Sonic BoomMovie | Student Controller | 23 |
| 1972 | Emergency!Series | Ofcr. Dave Gordon | 21 |
| 1968 | Adam-12Series | Officer Gus Corbin | 17 |
| 1951 | Hallmark Hall of FameSeries | Charles | — |