Worked as a schoolteacher for nearly ten years while acting in semi-professional and professional productions
Made feature acting debut in Jim Sheridan's "The Field"
Played sidekick to Mel Gibson's William Wallace in "Braveheart"
Acted in TNT adaptation of "Kidnapped"
Portrayed a dimwitted, low-level criminal in "I Went Down," directed by Paddy Breathnach and scripted by Conor McPherson
Played title role of Irish criminal Martin Cahill in John Boorman's "The General"
Landed featured role in "Mission: Impossible II," starring Tom Cruise
Co-starred with Brian Cox in "Salt Water"; adapted from McPherson's play "This Lime Tree Bower"
Re-teamed with Boorman to play a drunken revolutionary in "The Tailor of Panama"
Co-starred in "A.I. Artificial Intelligence," helmed by Steven Spielberg
Cast in Martin Scorsese's "Gangs of New York"
Played a corrupt police official in Los Angeles cop drama "Dark Blue"
Appeared in director Danny Boyle's post-modern zombie thriller "28 Days Later"
Cast in director Anthony Minghella's film adaptation of "Cold Mountain"
Cast as Spartan king Menelaus in director Wolfgang Petersen's epic "Troy"
Starred in M. Night Shyamalan's "The Village"
Cast opposite Orlando Bloom in Ridley Scott's "Kingdom of Heaven"
Played a hard-drinking Irish emigrant opposite Cillian Murphy in Neil Jordan's "Breakfast on Pluto"
Portrayed Alastor 'Mad-Eye' Moody in "Harry Potter and the Goblet of Fire," adapted from the fourth book in fantasy series by J.K. Rowling; directed by Mike Newell
Reprised role of 'Mad-Eye' Moody for "Harry Potter and the Order of the Phoenix"
Co-starred in Robert Zemeckis' "Beowulf," filmed using a special technique of motion capture
Co-starred with Colin Farrell as Irish contract killers in "In Bruges"
Portrayed British Prime Minister Winston Churchill in HBO movie "Into the Storm"
Reprised role of 'Mad-Eye' Moody in David Yates directed "Harry Potter and the Deathly Hallows: Part 1"
Played an unorthodox Irish policeman with a confrontational personality opposite Don Cheadle in crime comedy "The Guard"
Cast alongside Glenn Close, Mia Wasikowska, and Janet McTeer in "Albert Nobbs"
Appeared in action drama "Safe House" opposite Denzel Washington and Ryan Reynolds
Cast opposite John Cusack in mystery thriller "The Raven"
Voiced character of The Pirate with Gout for animated adventure "The Pirates! Band of Misfits"
Featured opposite director Robert Redford in thriller "The Company You Keep"