Well known for his liberal political activism, Martin Sheen is a Catholic who chose his stage name in honor of Catholic theologian Fulton J. Sheen. Though he strayed from the Church, he returned after falling seriously ill during the filming of "Apocalypse Now." Sheen, an Emmy and Golden Globe winner, has often been quoted linking his faith and his activism. "You know, the essence of the Gospel of Jesus was extremely radical, and that's why they killed Him," he told one interviewer. To another he said, "It doesn't really matter how much of the rules or the dogma we accepted and lived by if we're not really living by the fundamental creed of the Catholic Church, which is service to others and finding God in ourselves and then seeing God in everyone--including our enemies." Most recently, he played President Josiah Bartlett on "The West Wing" as a liberal Catholic who was often known to debate theological issues and quote the Bible. Since his TV presidential administration ended, he's appeared in the Oscar-winning "The Departed" and made news protesting the Iraq war with Cindy Sheehan.