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