Filmography71 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2025 | House of DavidSeries | Jesse | 59 |
| 2025 | Government CheeseSeries | — | 59 |
| 2024 | ShōgunSeries | Captain-General Ferreira | 58 |
| 2017 | TakenSeries | Carlos Mejia | 51 |
| 2017 | RiverdaleSeries | Vittorio 'Vito' Alto | 51 |
| 2017 | S.W.A.T.Series | William 'Buck' Spivey | 51 |
| 2017 | SEAL TeamSeries | Dr. Conners | 51 |
| 2016 | WestworldSeries | Dr. Alpert | 50 |
| 2016 | TravelersSeries | Rick Hall | 50 |
| 2016 | AftermathSeries | Bob 'Moondog' Black | 50 |
| 2016 | 20 MovesMovie | Himself | 50 |
| 2015 | The Man in the High CastleSeries | Brad Bellows | 49 |
| 2013 | Bates MotelSeries | Dr. Guynan | 47 |
| 2013 | MotiveSeries | Detective Oscar Vega | 47 |
| 2012 | ArrowSeries | Jerry Bertinelli | 46 |
| 2012 | TouchSeries | Felipe | 46 |
| 2010 | Rookie BlueSeries | Jacob Blackstone | 44 |
| 2009 | Stargate UniverseSeries | Everett Young | 43 |
| 2009 | Grey GardensMovie | David Maysles | 43 |
| 2008 | Breaking BadSeries | Declan | 42 |
| 2008 | The Andromeda StrainSeries | Colonel Ferrus | 42 |
| 2008 | True Confessions of a Hollywood StarletMovie | Sam | 42 |
| 2008 | Terra Incognita: Making the Andromeda StrainMovie | — | 42 |
| 2007 | ShooterMovie | Howard Purnell | 41 |
| 2005 | Criminal MindsSeries | Roy Colson | 39 |
| 2005 | Trump UnauthorizedMovie | Donald Trump | 39 |
| 2004 | Chestnut: Hero of Central ParkMovie | Matt Tomley | 38 |
| 2004 | Dawn of the DeadMovie | Luis | 38 |
| 2004 | The Lazarus ChildMovie | Lewis Kern | 38 |
| 2004 | TricksMovie | Donny | 38 |
| 2003 | NCISSeries | Nick Burris | 37 |
| 2003 | Wild CardSeries | — | 37 |
| 2002 | CSI: MiamiSeries | Jason Adams | 36 |
| 2002 | Scenes of the CrimeMovie | Louis | 36 |
| 2002 | Hidden HillsSeries | — | 36 |
| 2001 | 24Series | Danny Dessler | 35 |
| 2001 | Mutant XSeries | Henry Voight | 35 |
| 2001 | The Fighting FitzgeraldsSeries | Jim Fitzgerald | 35 |
| 2001 | Everything Put TogetherMovie | Russ | 35 |
| 2000 | CSI: Crime Scene InvestigationSeries | Ken Wellstone | 34 |
| 2000 | Battery ParkSeries | Ben Nolan | 34 |
| 2000 | BullSeries | — | 34 |
| 2000 | Fallen ArchesMovie | Duke (Robert) Romano (as Justin Louis) | 34 |
| 1999 | Judging AmySeries | Mr. Harbert | 33 |
| 1999 | Relic HunterSeries | Knowles | 33 |
| 1998 | Two Guys and a GirlSeries | Brandon | 32 |
| 1998 | TrinitySeries | Bobby McCallister | 32 |
| 1998 | The StaircaseMovie | Mr. Mouly | 32 |
| 1997 | CrackerSeries | — | 31 |
| 1997 | Dad's Week OffMovie | Chip | 31 |
| 1997 | The Perfect MotherMovie | John Podaras | 31 |
| 1996 | The PretenderSeries | Scotty Boyd | 30 |
| 1996 | MillenniumSeries | Edward | 30 |
| 1996 | The SentinelSeries | Arthur Sabin | 30 |
| 1995 | The Outer LimitsSeries | Father John Royce | 29 |
| 1995 | Star Trek: VoyagerSeries | Trevis | 29 |
| 1995 | Jack Reed: One of Our OwnMovie | — | 29 |
| 1995 | A Dream is a Wish Your Heart Makes: The Annette Funicello StoryMovie | Young Frankie Avalon | 29 |
| 1995 | Blood & DonutsMovie | Earl (as Justin Louis) | 29 |
| 1994 | ERSeries | Michael Mueller | 28 |
| 1993 | The X-FilesSeries | Detective Costa | 27 |
| 1993 | Kung Fu: The Legend ContinuesSeries | Kyle Bettinger | 27 |
| 1993 | Night OwlMovie | Alex | 27 |
| 1992 | Highlander: The SeriesSeries | Peter Kanis | 26 |
| 1991 | Naked LunchMovie | Exterminator #3 | 25 |
| 1990 | StellaMovie | Cocaine Dealer | 24 |
| 1990 | Common GroundMovie | Billy McGoff | 24 |
| 1988 | CocktailMovie | Soldier | 22 |
| 1988 | Drop-Out MotherMovie | — | 22 |
| 1987 | 21 Jump StreetSeries | Dean's Brother | 21 |
| 1987 | Friday the 13th: The SeriesSeries | Danny Cavaletti | 21 |