This guy's feature film debut was playing Lt. Luther Zogg in Dr. Strangelove. Both he and Jane Seymour were Oscar nominated for their roles in The Great White Hope. He helped Arnold Schwarzenegger's career by creating a great villain for him to defeat, Thulsa Doom, in Conan the Barbarian. Identify this man with a gifted voice who was initially uncredited in his most famous role, at least until 1983 when the third film in the trilogy was released.
James Earl Jones