David O'Hara is a Scottish actor known for his work in film and television. He gained recognition for his roles in movies such as The Departed and Braveheart, where he showcased his talent in portraying complex characters. O'Hara has also appeared in various television series, contributing to his reputation in the entertainment industry. In addition to his acting career, O'Hara has worked in theater, demonstrating his versatility as a performer. He has collaborated with notable directors and actors, further enhancing his experience and skills. His contributions to both film and stage have made him a respected figure in the arts.