Career

O'Mara performed with The Royal Shakespeare Company. His theatre work in London and Dublin included The Jew of Malta and Popcorn, and he was nominated for Best Supporting Actor in 2002 at the Irish Theatre Awards for his portrayal of John in Neil LaBute's Bash.

He appeared in Harold Pinter's The Homecoming in London and Dublin as well as Lincoln Center in New York. He had lead roles in other series, including The Agency, Band of Brothers, Monarch of the Glen, High Stakes, Playing the Field, The Bill, Berkeley Square, and Reach for the Moon.

He has starred as lead character Sam Tyler in the U.S. remake of the British series Life on Mars. He also played Jim Shannon, the lead role in the 2011 Fox TV series Terra Nova. He played Philip Marlowe in a 2007 pilot entitled Marlowe.

O'Mara also guest-starred in the Criminal Minds season two episode "The Last Word" as the Mill Creek Killer, a serial killer who is in competition with the Hollow Man, a serial shooter played by Scott Michael Morgan. O'Mara appeared in One for the Money as Joe Morelli. He also appeared on Vegas as Jack Lamb.

O'Mara was cast as Batman for The DC Universe Animated Original Movies shared universe of animated DC films based on The New 52. He has played Batman in Justice League: War and Son of Batman and will reprise his role for several more films in the line, including Justice League: Throne of Atlantis and Batman: Bad Blood.

USA Network premiered the medical drama Complications, starring O'Mara as an emergency room doctor, on Thursday, June 18, 2015.

Filmography

Year	Title	Role	Notes
2016	Justice League vs. Teen Titans	Bruce Wayne/Batman	Direct-to-video
2016	Batman: Bad Blood	Bruce Wayne/Batman	Direct-to-video
2015	Batman vs. Robin	Bruce Wayne/Batman	Direct-to-video
2015	Justice League: Throne of Atlantis	Bruce Wayne/Batman	Direct-to-video
2015	Complications	John Ellison	TV series
2015	Sons of Liberty	George Washington	Miniseries
2014	Son of Batman	Bruce Wayne/Batman	Direct-to-video
2014	Justice League: War	Bruce Wayne/Batman	Direct-to-video
2013	The Good Wife	Damian Boyle
2013	In a World...	Mr. Pouncer
2012-13	Vegas	Jack Lamb	TV series
2012	One for the Money	Joe Morelli
2011	Terra Nova	Jim Shannon	TV series
2009	Trust Me	Stu Hoffman	1 Episode
2008-09	Life on Mars	Detective Samuel "Sam" Tyler	TV series Main Role
2008	Grey's Anatomy	Philip	2 Episode
2007	Resident Evil: Extinction	Albert Wesker	Loosely based on Resident Evil 5
2006	Men in Trees	Stuart
2006	Criminal Minds	Mill Creek Killer
2006	In Justice	Charles Conti
2005-2008	The Closer	Bill Croelick	2 Episodes: "Fatal Retraction" & "Controlled Burn"
2004	CSI: Miami	Dr. Keith Winters	1 Episode
2002-03	The Agency	Andrew Blake "A.B." Stiles	TV series
2001	Monarch of the Glen	Fergal MacLure	TV series
2000-02	Playing the Field	Lee Quinn	TV series
2001	The Cassidys	Dominic
2001	High Stakes	Greg Hayden
2001	Band of Brothers	First Lieutenant Thomas Meehan III	HBO Miniseries
2000	The Bill	DCI/Det. Supt. Richard Pallister
1999	The Mrs Bradley Mysteries	Jake Hicks
1998	Peak Practice	Billy Matters
1998	Berkeley Square	Ned Jones
1996	Soldier Soldier	Paramedic
1996	Space Truckers	Chopper 3
1995	Summertime	Father Pat

[ Source: Wikipedia ]