I have to disagree with both of you. Wall St. was great. Salvador was great. Conan was a hell of a lot of fun. Midnight express, 8 million ways to die, Scarface were wonderful. Born on the Fourth of July was extremely powerful.
Born on the Fourth of July was a propaganda piece. As were Platoon, Nixon, and JFK. Scarface was just a remake of Little Caesar, and Conan is an adaptation of a long-standing pulp fiction character which was handled adequately at best.
Stone wrote CONAN. John Milius directed it.