Actor and director who became known worldwide for his performance in The Boondock Saints and The Boondock Saints II: All Saints Day. He gained further recognition for his role as Daryl Dixon in the horror TV series The Walking Dead.
He was briefly employed at a Harley Davidson shop while producing artwork as a painter, photographer, sculptor, and video artist. He made his debut in the 1997 film Mimic.
He played Lewis Payne in Robert Redford's classic film The Conspirator, which was about the Lincoln assassination.
He appeared in the Pilot episode of the TV show Hawaii Five-0, which starred Scott Caan.