The Beginning or the End (1947). A fictional and compressed account of the development of the atomic bomb. Brian Dunlevy was Gen. Groves, Hume Cronyn was Oppenheimer, and Barry Nelson was Paul Tibbets, pilot of the Enola Gay.
Duel at Diablo (1966). Western starring James Garner and Sidney Poitier.
Sherlock, the Empty Hearse. First ep of season 3. Loved it.