Trivia: When Tony Manero's father slaps him on the back of the head during an argument at the dinner table, Tony replies, "Would you just watch the hair? You know, I work on my hair a long time and you hit it! He hits my hair!" John Travolta ad-libbed this line. Director John Badham thought it was so perfect for the character of Tony Manero that he decided to leave it in the film.
Trivia: Jackie Gleason's character is Buford T. Justice. This was the name of a real Florida Highway Patrolman known to Burt Reynolds' father who was once Chief of Police of Jupiter, Florida.
Trivia: When Doc Terminus is tied to the harpoon shot from the cannon and goes through the building roof, you can hear a "Goofy Holler."
Trivia: The character of umbrella wielding Major Harry Carlyle was inspired by real life Major Allison Digby Tatham-Warter, who said that he 'carried the umbrella because he could never remember the password, and it would be quite obvious to anyone that the bloody fool carrying the umbrella could only be an Englishman'. Unlike Carlyle in the film, Major Tatham-Warter survived the battle and was captured by the Germans. He escaped, and in the weeks that followed, aided by Dutch Resistance, helped hundreds of other soldiers in similar situations to be evacuated to safety.
Trivia: This applies to Moonraker too - Jaws' "teeth" were so painful that actor Richard Kiel could only keep them in for a few seconds at a time, which is why you don't get too many long shots with them visible. He only wore them when he needed to open his mouth.
Trivia: In the scene in which Alvy and Annie are watching people in the park and Alvy comments, "Oh, there goes the winner of the Truman Capote Look-Alike Contest," the passer by is actually Truman Capote, in an un-credited cameo.
Trivia: Author Peter Benchley has a cameo as a U-boat crewman in the prologue (extended version).
Trivia: Ian McShane was originally down to play the part of Jesus, and ended up being cast as Judas.
Trivia: During the second to the last scene of the movie, Barbara Carrera is trying to help Michael York push a rowboat into the ocean from the shore. As one of the manbeasts runs into the surf towards them, Barbara Carrera screams "Michael, look out"! Michael York's name in the movie is Andre Braddock!
Trivia: More than 8,000 rounds were used for the climactic shoot-out scene.
Trivia: When Hal Holbrook talks to the press after the heat shield separation we see a model Saturn V in the background. An extra stage has been inserted above the S-II second stage and the mission payload appears to have been augmented too.
Trivia: In this movie, Penny Irving plays Young Mr. Grace's new secretary, Miss Nicholson. In the TV series, she was called Miss Bakewell.
Trivia: Original titles for the film included "Free Popcorn" and "Closed for Remodeling."
Trivia: In the scene where the Lea family get into the funeral limousine by mistake, the three mourners who join them are played by Betty Hare, Winifred Braemar and Bertie Hare, who are the real life siblings of Doris Hare, who plays Mrs Lea.
Trivia: Director John Frankenheimer has a cameo as the television director in the Coliseum control room.