Trivia: Yvonne Elliman and Barry Dennen, as Mary Magdalene and Pontius Pilate, respectively, are the only cast members who appeared on the concept album, in the original staging of the show on Broadway, and in the feature film.
Trivia: The topless girl at the mobsters' pool party is future "Three's Company" TV star Suzanne Somers.
Trivia: In the scene where Regan's mother is supernaturally blasted away from the bedside, she is being yanked by the crew by a length of rope. After dozens of takes director William Friedkin was still unhappy with the look of the shot and ordered the crew to haul her more fiercely. The scream in the shot that made the cut was of genuine pain and required no dubbing for effect.
Trivia: When Terry is being introduced, he drives up on his scooter, and has quite a bit of trouble parking it. This is because Charles Martin Smith actually didn't know how to drive a stick shift. The small accident he has is real, you can see him crash, look up towards the camera (at Lucas), and continue the scene. Lucas motioned for him to continue, because the crash looked so interesting.
Trivia: Doyle Lonnegan's limp was a result of Robert Shaw injuring his ankle. Rather than working around it, Shaw incorporated the limp into his performance.
Trivia: The Jackal demands $500,000 (US) to assassinate De Gaulle, which seems like a modest amount for such a dangerous job. However, when you take inflation into account that's the equivalent in 2024 money of over $5m. No wonder his putative employers are surprised.
Trivia: The role of camp television presenter Cecil Gaybody (portrayed by Jimmy Logan) was originally written for Charles Hawtrey who had a falling out with producer Peter Rogers in the previous film, "Carry On Abroad". Hawtrey did not appear in any further films.
Trivia: At the end of the film when the Stranger (Clint Eastwood) is riding out of Lago, he passes a midget who is painting a name on a tombstone. In the next shot you see two more tombstones to the left. The names on these are "Sergio Leone" and "Don Siegel."
Trivia: Yul Brynner, The Man in Black, has only 9 lines of dialogue throughout the movie, only 32 words. In the first saloon scene, Brynner intentionally bumps Richard Benjamin and says, "Sloppy with your drink"; after some silence, Brynner says to the bartender, "Get this boy a bib"; a few moments later, Brynner taunts again, "He needs his momma"; Benjamin finally summons the courage to speak, and Brynner replies, "You say something, boy?" Benjamin says Brynner talks too much, and Brynner challenges, "Why don't you make me shut up?" Whereupon, the two men square off for a duel, and Brynner finally says, "Your move." Later, about half-way through the film, when the Man in Black invades their hotel room, Richard Benjamin overhears Yul Brynner say the line "Not a word" to James Brolin. Even later, Brynner challenges Benjamin and Brolin in the street: Brynner first says, "Hold it," and shoots Brolin dead; Brynner then smiles at Benjamin and says, "Draw."
Trivia: This was Edward G. Robinson's last film.
Trivia: The weapons used against Megalon (the ones that look like satellite dishes that shoot lightning) actually existed, although they were never used in combat. The Japanese experimented with them during WWII.
Trivia: Christopher Lee did this movie for free, and considers it one of his best roles ever.
Trivia: When Robin Hood and all of the villagers are having the party and singing and dancing, look closely at the dance, it's from Snow White. Some of the villagers are the dwarfs and Maid Marion is Snow White. Also, when Little John is dancing it's from The Jungle Book.
Trivia: Dustin Hoffman wore contact lenses so he could see correctly wearing those thick glasses.
Trivia: Despite repeated citations in print, (as recently as the 2001 edition of 'Film Facts' by Patrick Robertson), both Donald Sutherland and Julie Christie maintain that the sex scene between them was, in fact simulated, and they did not actually have sex, as has been widely reported.
Trivia: Actress Tatum O'Neal, at age ten, became the youngest person to won an Oscar for an acting role. This excludes Shirley Temple, who won an honorary Oscar at age six in 1935.
Trivia: The two boys who are sitting under the lamppost outside Holly's house are Martin Sheen's two sons, Charlie Sheen and Emilio Estevez.
Trivia: One of the movie critics that Edward Lionhart kills in the movie is Miss Chloe Moon, played by Coral Browne. In real life, Vincent Price and Coral Browne fell madly in love while making this movie, and they married shortly afterward, and remained married until her death in 1991.