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.