Filmography61 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2024 | BRATSMovie | Self (archive footage) (uncredited) | 64 |
| 2015 | Avengers: Age of UltronMovie | Ultron (voice) | 55 |
| 2014 | The Tonight Show Starring Jimmy FallonSeries | Self | 54 |
| 2014 | Late Night with Seth MeyersSeries | Self | 54 |
| 2013 | The BlacklistSeries | Raymond 'Red' Reddington | 53 |
| 2013 | The FrameSeries | James Ballard | 53 |
| 2012 | Final Cut: Ladies and GentlemenMovie | (archive footage) | 52 |
| 2012 | LincolnMovie | W.N. Bilbo | 52 |
| 2009 | The Tonight Show with Conan O'BrienSeries | Self - Guest | 49 |
| 2005 | The OfficeSeries | Robert California | 45 |
| 2005 | The Late Late Show with Craig FergusonSeries | Self | 45 |
| 2005 | The Reichen ShowSeries | Self - Guest | 45 |
| 2004 | Boston LegalSeries | Alan Shore | 44 |
| 2004 | Shadow of FearMovie | William Ashbury | 44 |
| 2003 | The Ellen DeGeneres ShowSeries | Self | 43 |
| 2003 | Celebrities UncensoredSeries | Self | 43 |
| 2003 | Alien HunterMovie | Julian Rome | 43 |
| 2003 | The Pentagon PapersMovie | Daniel Ellsberg | 43 |
| 2003 | I WitnessMovie | Douglas Draper | 43 |
| 2002 | The StickupMovie | John Parker | 42 |
| 2002 | SecretaryMovie | Mr. Grey | 42 |
| 2001 | Speaking of SexMovie | Dr. Roger Klink | 41 |
| 2000 | SupernovaMovie | Nick Vanzant | 40 |
| 2000 | The WatcherMovie | FBI Special Agent Joel Campbell | 40 |
| 2000 | Slow BurnMovie | Marcus | 40 |
| 1998 | Curtain CallMovie | Stevenson Lowe | 38 |
| 1997 | The PracticeSeries | Alan Shore | 37 |
| 1997 | The ViewSeries | Self | 37 |
| 1997 | Critical CareMovie | Dr. Werner Ernst | 37 |
| 1997 | Keys to TulsaMovie | Ronnie Stover | 37 |
| 1997 | DriftwoodMovie | The Man | 37 |
| 1996 | The Daily ShowSeries | Self - Guest | 36 |
| 1996 | 2 Days in the ValleyMovie | Lee Woods | 36 |
| 1996 | CrashMovie | James Ballard | 36 |
| 1994 | WolfMovie | Stewart Swinton | 34 |
| 1994 | StargateMovie | Dr. Daniel Jackson | 34 |
| 1993 | FrasierSeries | Steven (voice) | 33 |
| 1993 | Dream LoverMovie | Ray Reardon | 33 |
| 1992 | The Tonight Show with Jay LenoSeries | Self - Guest | 32 |
| 1992 | Bob RobertsMovie | Chuck Marlin | 32 |
| 1991 | True ColorsMovie | Tim Gerrity | 31 |
| 1990 | White PalaceMovie | Max Baron | 30 |
| 1989 | sex, lies, and videotapeMovie | Graham Dalton | 29 |
| 1989 | SeinfeldSeries | Jason 'Stanky' Hanky | 29 |
| 1989 | The Rachel PapersMovie | Deforest | 29 |
| 1988 | LIVE with Kelly and MarkSeries | — | 28 |
| 1988 | Jack's BackMovie | John Allen Wesford / Richard Wesford | 28 |
| 1988 | Greasy LakeMovie | Digby | 28 |
| 1987 | Wall StreetMovie | Roger Barnes | 27 |
| 1987 | Baby BoomMovie | Ken Arrenberg | 27 |
| 1987 | Less Than ZeroMovie | Rip | 27 |
| 1987 | MannequinMovie | Mr. Richards | 27 |
| 1986 | Pretty in PinkMovie | Steff McKee | 26 |
| 1985 | Tuff TurfMovie | Morgan Hiller | 25 |
| 1985 | StarcrossedMovie | Joey Callaghan | 25 |
| 1984 | Family SecretsMovie | Lowell Everall | 24 |
| 1983 | DinerMovie | Fenwick | 23 |
| 1983 | Cocaine: One Man's SeductionMovie | Buddy Gant | 23 |
| 1983 | A Killer in the FamilyMovie | Donny Tison | 23 |
| 1981 | Endless LoveMovie | Keith | 21 |
| 1978 | Team-MatesMovie | Jimmy | 18 |