Co-starred in the off-Broadway staging of "The Cider House Rules - Part One: Here in St. Cloud's"
Feature acting debut, "Nailed"
Featured in Ron Howard's period drama "Far and Away"
Landed first lead role in "The Snapper," the second film in Doyle's Barrytown trilogy directed by Stephen Frears
Cast in featured role as a slick politician in "Last of the High Kings"
Played recurring role of Cowen, leader of the Genii, on the Sci Fi Channel series "Stargate Atlantis"
Joined the cast of the "Star Trek" spin-off series "Star Trek: Deep Space Nine"; reprised role of O'Brien
Made his Broadway debut in "Nicholas Nickleby"
Moved to London in his early 20s
Played a detective in "Law Abiding Citizen" opposite Gerard Butler and Jamie Foxx
Played the mayor of a small-town in the David E. Kelley penned "Mystery Alaska"
Re-teamed with Parker in "The Commitments," playing the colorful father of the band's manager; the first film in Doyle's Barrytown trilogy
Starred in the musical comedy "The Boys and Girl from County Clare"
Cast as Engineer Miles O'Brien on the "Star Trek" spin-off "Star Trek: The Next Generation" (Syndicated)
Landed bit parts in Warren Beatty's appropriately cartoonish "Dick Tracy" and the action sequel "Die Hard 2: Die Harder"
Played supporting role in John Huston's "The Dead"
Played a short-tempered DEA agent in "Con Air"
Portrayed the former Leeds manager Don Reviethe in the British film "The Damned United"
Cast as a gangster who forces the title character into a life of prostitution in "Claire Dolan"
Co-starred as a zealot vegetarian in "The Road to Wellville," Alan Parker's 1907-set satire of health fanaticism
Co-starred in the TNT movie "King of Texas," which reset Shakespeare's "King Lear" in the U.S.
First film with director Alan Parker, "Come See the Paradise"
Delivered memorable role as strong-willed innkeeper Morgan the Goat in "The Englishman Who Went Up a Hill but Came Down a Mountain"
Delivered supporting turn as the fey operator of a bed & breakfast in "This Is My Father"
Joined 7:84, a small British leftist theater company
Played the title role in the film "How Harry Became a Tree"
Starred as the leader of the leprechauns in the NBC fantasy miniseries "The Magical Legend of the Leprechauns"
Starred in the Irish film "Kings"
Featured on Broadway in "Breaking the Code"
Appeared opposite then-wife Bairbre Dowling as parents of a leader of a children's gang in "The War of the Buttons"
Co-starred with Colin Farrell in the drama "Intermission"
Co-starred with Daniel Craig in the British gangster hit "Layer Cake," directed by Matthew Vaughn
First television appearance, "Z-Cars" on BBC1
Moved to Los Angeles, CA
Played the title character's cousin in "Scarlett," the CBS miniseries sequel to "Gone With the Wind"
Re-teamed with Frears for the third film in Doyle's Barrytown trilogy "The Van"
Cast in the comedy feature "Get Him to the Greek"
Co-starred with Robert Pattinson in the Parisian-set period drama "Bel Ami," based on the novel by Guy de Maupassant