Filmography
| Television | |||
|---|---|---|---|
| Year | Title | Role | Notes |
| 1983–1990 | Dallas | Morrisey | |
| 1985 | The A-Team | Paul Winkle | |
| 1987 | Falcon Crest | Saunder's Henchman #2 / Eddie | |
| Downtown | Nick | ||
| Hooperman | Large Biker | ||
| Ohara | Webster | ||
| 1988 | Return of the Living Dead Part II | Sarge | |
| 1989 | Dragnet | Bridgewater Hamilton | |
| Alien Nation | John Paul Sartre | ||
| China Beach | E.O.D. Sergeant | ||
| Shocker | Horace Pinker | ||
| 1990 | Mancuso, FBI | Prisoner | |
| Hunter | Chuck Danko | ||
| Doctor Doctor | Coach | ||
| 1991 | Knight Rider 2000 | Thomas Watts | |
| Paradise | Rafe | ||
| Guilty as Charged | Dominique | ||
| The Antagonists | Detective Haley | ||
| Drexell's Class | Ex-Boyfriend | ||
| 1992 | Get a Life | Nax | |
| Roc | White Officer | ||
| 1994–2002 | The X-Files | Walter Skinner | |
| 1995 | Vampire in Brooklyn | Tony the Hitman (uncredited) | |
| Pointman | Benny Dirkson | ||
| Models Inc. | The Hit Man | ||
| 1997 | Players | Jake Morgan | |
| 1998 | Walker, Texas Ranger | Paul Grady | |
| The X-Files: Fight the Future | Walter Skinner | ||
| 1999 | That '70s Show | Bull | |
| 2000 | ER | Terry Waters | |
| Batman Beyond | Dr. Stanton | ||
| 2001 | The Lone Gunmen | Walter Skinner | |
| 2002 | In Search Of... | Himself | |
| 2002-2003 | Birds of Prey | Al Hawke | |
| 2003 | Tarzan | Richard Clayton | |
| 2003–2005 | Law & Order: Special Victims Unit | DEA Agent Jack Hammond | |
| 2004–2005 | The Mountain | Colin Dowling | |
| 2005 | Eyes | Robert Sutherland | |
| The West Wing | Senator Dresden | ||
| Nip/Tuck | Dr. Russell Marcus | ||
| 2005–2007 | The Batman | Commissioner James Gordon | |
| 2005–2009 | Stargate Atlantis | Colonel Steven Caldwell | |
| 2006 | CSI: Crime Scene Investigation | Happy Harry Desmond | |
| 2006–2007 | Day Break | Detective Spivak | |
| 2007 | Cold Case | Mitch Hathaway | |
| Boston Legal | U.S. Attorney Mark Freestone | ||
| Reaper | Detective Dan Stafford | ||
| 2007–2010 | Grey's Anatomy | Larry Jennings | |
| 2008 | Brothers & Sisters | Browne Carter | |
| Criminal Minds | Norman Hill | ||
| The X-Files: I Want to Believe | Walter Skinner | ||
| 2008–2011 | Sons of Anarchy | Ernest Darby | |
| 2008–2011 | Supernatural | Samuel Campbell / Azazel | |
| 2009 | In Plain Sight | Al Dennison | |
| 2009–2010 | Medium | Dan Burroughs | |
| 2010 | Human Target | Leonard Kreese | |
| Castle | Hans Brauer | ||
| 2011 | Workaholics | Melissa's dad | |
| 2012 | The Finder | ||
| Dallas | Harris Ryland | ||
Read more about this topic: Mitch Pileggi