Gained popularity as the character George Mason on the television show 24 and has also starred as Percy Rose in Nikita, Sheriff Thomas McAllister in The Mentalist and Magistrate Hale in Salem. In 2008, he appeared as Stuart in the hit action film Taken.
He played characters in shows like Miami Vice and The A-Team with his first ever role being in an epiosde of M*A*S*H.
He was a voice actor on the animated series Teen Titans.
He married Sarah Clarke, with whom he had two daughters.
He starred with Kiefer Sutherland, who played the main character in the television show 24.