MIdnight Cowboy is the only X Rated movie which has received an Oscar in 1969.
Midnight Cowboy is a 1969 American drama film based on the 1965 novel of the same name by James Leo Herlihy. The film was written by Waldo Salt, directed by John Schlesinger, and stars Jon Voight alongside Dustin Hoffman. Notable smaller roles are filled by Sylvia Miles, John McGiver, Brenda Vaccaro, Bob Balaban, Jennifer Salt and Barnard Hughes.