Martin Sheen is an American actor born on August 3, 1940, in Dayton, Ohio. He is best known for his roles in films like Apocalypse Now and The West Wing, where he portrayed President Josiah Bartlet. Sheen has had a prolific career in both film and television, earning critical acclaim for his performances. In addition to acting, Sheen is an activist and has been involved in various social and political causes, including environmental issues and human rights. He has received several awards throughout his career, including a Golden Globe and a star on the Hollywood Walk of Fame.