Gaston has appeared in numerous movies and TV shows, as well as various productions on and off Broadway, including "Lucky Guy," with Tom Hanks, in 2013. He' has a B.A. In History from UC Davis and an M.F.A. From NYU. He has two children and lives in New York's Hudson Valley.
2 nominations.
| Movie | The Interestings | Unknown | 2017 |
| Movie | Bridge of Spies | Unknown | 2015-10-16 |
| Movie | Broad Squad | Unknown | 2015 |
| Series | The Man in the High Castle | Unknown | 2015-01-15 |
| Series | Blindspot | Unknown | 2015-09-21 |
| Series | Last Week Tonight with John Oliver | Unknown | 2014 |
| Series | The Leftovers | Dean | 2014-06-29 |
| Series | How to Get Away with Murder | Unknown | 2014-09-25 |
| Series | Chicago P.D. | Unknown | 2014-01-08 |
| Series | TURN: Washington's Spies | Unknown | 2014 |
| Series | The Americans | Unknown | 2013-01-30 |
| Series | The Following | Unknown | 2013-01-21 |
| Series | Last Resort | Unknown | 2012 |
| Movie | Big Miracle | Unknown | 2012-02-03 |
| Series | Elementary | Unknown | 2012-09-27 |
| Movie | Tending Fires | Unknown | 2012 |
| Series | Unforgettable | Unknown | 2012-01-10 |
| Series | Person of Interest | Unknown | 2011-09-22 |
| Movie | Inception | Unknown | 2010 |
| Series | Blue Bloods | Unknown | 2010-09-24 |
| Series | Rubicon | Unknown | 2010-08-01 |
| Series | Terriers | Unknown | 2010-09-08 |
| Movie | Last of the Ninth | Lt. John 'the rug' White | 2009 |
| Movie | Hurricane Season | Unknown | 2009 |
| Movie | Fringe Season 1 Visual Effects | Unknown | 2009 |
| Movie | U.S. Attorney | Unknown | 2009 |
| Series | Royal Pains | Unknown | 2009-09-12 |
| Series | NCIS: Los Angeles | Unknown | 2009-09-22 |
| Series | The Good Wife | Unknown | 2009-09-22 |
| Series | White Collar | Unknown | 2009-10-23 |
| Movie | Cut, Good: The Making of 'Runaway' | Himself | 2009-12-08 |
| Movie | Behind the Real Science of 'Fringe Season 1' | Unknown | 2009 |
| Movie | Evolution: The Genesis of 'Fringe Season 1' | Sanford Harris | 2009-09-08 |
| Movie | Sugar | Unknown | 2008 |
| Series | Raising the Bar | Unknown | 2008 |
| Movie | Home | Unknown | 2008 |
| Series | Fringe | Unknown | 2008-09-09 |
| Movie | W. | Unknown | 2008-10-17 |
| Series | The Mentalist | Unknown | 2008-09-23 |
| Movie | Body of Lies | Unknown | 2008 |
| Series | Damages | Unknown | 2007-07-24 |
| Series | Mad Men | Unknown | 2007-07-19 |
| Series | Saving Grace | Unknown | 2007-07-23 |
| Series | Brotherhood | Unknown | 2006 |
| Movie | Lonely Hearts | D.A. Hunt | 2006-10-21 |
| Series | Jericho | Unknown | 2006-09-20 |
| Movie | Out There | Unknown | 2006 |
| Movie | The Notorious Bettie Page | Unknown | 2006-05-05 |
| Movie | Runaway | Unknown | 2005 |
| Series | Bones | Unknown | 2005-09-13 |
| Series | Numb3rs | Unknown | 2005 |
| Series | Prison Break | Unknown | 2005-08-29 |
| Series | Blind Justice | Lt. Gary Fisk | 2005-03-08 |
| Movie | Stay | Unknown | 2005 |
| Movie | Mind the Gap | Unknown | 2004 |
| Series | NCIS | Unknown | 2003-09-23 |
| Movie | Far from Heaven | Stan Fine | 2003-01-10 |
| Series | Without a Trace | Unknown | 2002-09-26 |
| Series | John Doe | Unknown | 2002 |
| Movie | High Crimes | Maj. Lucas Waldron | 2002-04-05 |
| Series | Hack | Unknown | 2002-09-27 |
| Series | Deadline | Unknown | 2001 |
| Series | 100 Centre Street | Unknown | 2001-01-15 |
| Movie | Thirteen Days | Unknown | 2001-01-12 |
| Series | The Guardian | Unknown | 2001-09-25 |
| Series | 24 | Unknown | 2001-11-06 |
| Movie | Bless the Child | Unknown | 2000 |
| Series | Ed | Unknown | 2000-10-08 |
| Series | The $treet | Unknown | 2000-11-01 |
| Series | CSI: Crime Scene Investigation | Unknown | 2000-10-06 |
| Movie | Cora Unashamed | Unknown | 2000 |
| Series | Malcolm in the Middle | Unknown | 2000-01-09 |
| Series | Now and Again | Unknown | 1999 |
| Series | Third Watch | Unknown | 1999-09-26 |
| Series | The Sopranos | Unknown | 1999-01-10 |
| Movie | Wayward Son | Unknown | 1999 |
| Movie | Nathan Dixon | Unknown | 1999 |
| Movie | Double Jeopardy | Unknown | 1999 |
| Series | Law & Order: Special Victims Unit | Unknown | 1999-09-20 |
| Series | The West Wing | Unknown | 1999-09-22 |
| Movie | Late Bloomer | Unknown | 1997 |
| Series | Ally McBeal | Unknown | 1997-09-08 |
| Series | Oz | Unknown | 1997-07-12 |
| Movie | Cop Land | Unknown | 1997-08-15 |
| Series | The Practice | Unknown | 1997-03-04 |
| Series | Spin City | Unknown | 1996-09-17 |
| Movie | The Crucible | Unknown | 1996 |
| Series | Profiler | Unknown | 1996-09-21 |
| Movie | Ransom | Agent Jack Sickler | 1996-11-08 |
| Series | New York News | Unknown | 1995-09-28 |
| Series | JAG | Unknown | 1995-09-23 |
| Movie | Sudden Death | Unknown | 1995-12-22 |
| Movie | Hackers | Unknown | 1995-09-15 |
| Movie | Amateur | Unknown | 1995-05-19 |
| Series | ER | Unknown | 1994-09-19 |
| Series | New York Undercover | Unknown | 1994-09-08 |
| Movie | The Wedding Banquet | Unknown | 1993 |
| Series | Homicide: Life on the Street | Unknown | 1993-01-31 |
| Series | The Adventures of Pete & Pete | Unknown | 1993-12-05 |
| Series | Law & Order | Unknown | 1990-09-13 |
| Series | One Life to Live | Unknown | 1968-07-15 |