Dr. Strangelove (also known as Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb) was a 1964 Earth movie by Stanley Kubrick.
John Crichton referenced the movie when he wrote "Hi There" on the side of a nuclear bomb he was carrying. ("We're So Screwed - La Bomba")
Not long after, he wrote "Dear John" on a second nuclear bomb that he then attached to Scorpius. ("Bad Timing")