ason was born and raised in Dublin, Ireland. After graduating from Trinity College Dublin with a BA in Drama and Theatre he moved to London, England, to further pursue his acting career. Time spent in British repertory theater led to major roles in some of Britain and Ireland's great theaters, including the Royal Shakespeare Company, the Almeida theater, London's West End (the Apollo and Comedy theaters) and the Gate Theatre, Dublin. Concurrently, he appeared in many British TV series for both the BBC and ITV. A move to the US in 2002 allowed Jason opportunities in Hollywood where he has played series regular roles on several network television shows. Jason and his family divide their time between the east and west coasts of America, and get back to visit Ireland as often as they can.
One for the Money as Joe Morelli (2012)
Terra Nova as Jim Shannon (2011)
Trust Me as Stu Hoffman (1 episode, 2009)
Life on Mars (US version) as Sam Tyler (ABC TV series 2008-2009)
Grey's Anatomy as Philip (Where The Wild Things Are, Piece Of My Heart) (2008)
Marlowe as Philip Marlowe (2007)
Resident Evil: Extinction as Albert Wesker (2007)
Men In Trees as Stuart (2006)
Criminal Minds as Mill Creek Killer (2006)
In Justice as Charles Conti (2006)
The Closer as Bill Croelick (Fatal Retraction-2005, Controlled Burn-2008)
CSI: Miami as Dr. Keith Winters (2004)
The Agency as A.B. Stiles (2002–2003)
Monarch of the Glen as Fergal MacLure (2001)
Playing the Field as Lee Quinn (2001)
The Cassidys as Dominic (2001)
High Stakes as Greg Hayden (2001)
Band of Brothers as First Lieutenant Thomas Meehan III (2001)
Reach for the Moon as Ben Collier (2000)
The Bill as DCI/Det. Supt. Richard Pallister (2000)
The Mrs Bradley Mysteries as Jake Hicks (1999)
Unfinished Business (1998)
Peak Practice as Billy Matters (1998)
Berkeley Square as Ned Jones (1998)
Cause Of Death (1997)
Gobble as the East Anglian Journalist (1997)
Soldier Soldier as the medic (1996)
Space Truckers as Chopper 3 (1996)
Elodie (1996)
Summertime as Father Pat (1995)
