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2025 · Bride Hard as Edgar
2019 · Garrow as
2019 · Blood & Treasure as Patrick McNamara
2019 · Emma Fielding Mysteries: More Bitter Than Death as Duncan Thatcher
2018 · The Romanoffs as Steve Lewis
2018 · Another Time as Ben
2017 · Gun Shy as Ben Harding
2017 · Signed, Sealed, Delivered: Higher Ground as Steve
2015 · Signed, Sealed, Delivered: The Impossible Dream as Steve Marek
2015 · Lost Boy as Greg Harris
2014 · The Flash as Anton Slater
2014 · Crisis as CIA Director Widener
2013 · Batman: The Dark Knight Returns as Clark Kent / Superman (voice)
2013 · Batman: The Dark Knight Returns, Part 2 as Clark Kent / Superman (voice)
2012 · Stolen as Fletcher
2011 · Body of Proof as Det. Tommy Sullivan
2011 · Harry's Law as Oliver Richard
2010 · Hawaii Five-0 as Special Agent Frank Zagar
2010 · Hot in Cleveland as Jason
2010 · Human Target as Christopher Chance
2009 · SOKO Stuttgart as John McDuff
2008 · Fringe as John Scott
2008 · Swingtown as
2007 · Shrek the Third as Cyclops (voice)
2007 · Nanking as Stage Manager
2006 · Emily's Reasons Why Not as Reese Callahan
2004 · Boston Legal as Brad Chase
2004 · The 4400 as Warren Lytell
2003 · I'm with Her as
2003 · Keen Eddie as
2001 · Pasadena as Robert Greeley
2001 · The Lone Gunmen as
2000 · CSI: Crime Scene Investigation as Jack Willman
2000 · CSI: Crime Scene Investigation as Daniel Shaw
2000 · Jericho as Jericho
2000 · The Next Best Thing as Cardiologist
1999 · Once and Again as
1999 · Law & Order: Special Victims Unit as Jake Keegan
1998 · The Siege as FBI Agent Mike Johanssen
1998 · Brimstone as Barry Ceneazo
1998 · Some Girl as Police Officer
1997 · George Wallace as Bobby Kennedy
1997 · George Wallace as Bobby Kennedy
1997 · The View as Self
1996 · Spin City as Joseph Maxwell
1994 · Vanishing Son IV as Adams
1994 · ER as Richard Lockhart
1994 · Vanishing Son as Adams
1993 · Diagnosis: Murder as Capt. Paul Davis
1992 · The Tonight Show with Jay Leno as
2026 · Hostage as Jon Lewis

Mark Valley

Known For

Credits