Trivia: The English version of the theme song is not a remixed version, as the previous four movie themes were - this theme has the same music and tempo as the TV version. The composers did not create a second verse to the song "Master Quest," so it has the same lyrics as the TV version all the way through.
Trivia: When Keith Richards is looking up the rule in the pirate code book, the skull ring on his finger is not a prop; he has worn it since receiving it for his birthday in 1978 from a famous London goldsmith, who used a real skull when modelling the design.
Trivia: The sound of Vigo growling is exactly the same growl that the terror dogs from the first Ghostbusters make.
Trivia: In the entire film, there are only two "homegrown", real humans - Tank and Dozer. They both have names of machines.
Trivia: The two old men near the end, talking about it being "old school" are voiced by Frank Thomas and Ollie Johnston, two Walt Disney animators who worked on such classics as Bambi and Cinderella.
Trivia: John Rhys-Davies is missing the end of his middle finger on his left hand due to a farming accident as a child. The make-up artists made artificial, gelatin fingertips for him to wear in the movies. Davies one day, cut the tip in half, put 'blood' in it and closed it up. He went over to Peter Jackson (unaware of the gelatin tip) and said, "Boss, I've had an accident, look what happened". Jackson saw a small cut, but Davies bent the tip back and it split open, gushing.
Trivia: George Clooney (Everett) was going to sing "Man of Constant Sorrow" for the film but his singing voice was very poor so he ended up lip-synching the songs instead. He said "I'm not my aunt [referring to the late singer/actress Rosemary Clooney, best known for her role in "A White Christmas" (1954)]. I decided it would be easier to just do a passionate lip-sync." He was so nervous that the tapes of his singing would get out that he returned to the studio to ensure all the evidence had been erased. The musical director of the film confirmed this but said "George is a very good singer but that style of music is very difficult and one almost has to grow up singing it in order to sing it convincingly. George did a really good version of the tune but it wasn't as good as he wanted."
Trivia: Kevin Smith once happened upon a demonstration against this movie by a group of Catholics. Since nobody recognized him, he simply joined in.
Trivia: In the scene after Hiccup finally gets Toothless' new tail fin to work, and the two are relaxing after they fly through the fire ball, the two are greeted by a group of tiny dragons. This little dragon was actually what Toothless was originally going to be, as he was in the book, until they changed him to a dragon big enough for Hiccup to ride to suit the movie. (00:46:15)
Trivia: The knife that is given to Louis by the pirates is the exact same knife that Buck had in the previous film.
Trivia: Red Grant has no dialogue until he first meets Bond. He first speaks in a rich, upper-class English accent. After Grant has revealed his true identity to Bond, his English accent changes into a lower-class Irish accent as he explains the SPECTRE background plot.
Trivia: Edward Hyde tells Nicholas that he is a younger man. In real life, Tom Cruise is two years older than Russell Crowe.
Trivia: Jeff East, who plays teenage Clark Kent, was dubbed over with Christopher Reeves' voice. The only time Jeff's actual voice is heard is when he shouts in excitement after jumping past the speeding train.
Trivia: The first MCU movie to feature the word "fuck", when Quill tells Nebula to "open the fucking door", a line that was improvised on-set and kept in because it was so funny. James Gunn anticipated being told to cut it out, but Kevin Feige left it up to Gunn's discretion. Feige said the Russo brothers had a "fuck" in an early cut of Avengers: Endgame, but they "didn't want that to be their legacy, so if you want that to be your legacy, then sure." James Gunn said that just made him even more keen to keep the line in, at which Feige "laughed his ass off."
Trivia: Over the decades, one persistent Internet rumor maintains that the tiger used in the first Beastmaster film died a horrible, lingering, 2-year death from skin cancer as a result of having his entire coat dyed black with toxic chemicals. As usual for Internet gossip, the details of this story are dreadfully confused, at best. According to director Don Coscarelli (speaking during an interview with author Staci Layne Wilson for her 2007 book "Animal Movies Guide," page 350), the film's executive producer brought in an animal handler who chose to dye more than one tiger black. Just to be clear, none of the tigers became diseased or expired from the non-toxic black vegetable dye. It was necessary, however, to anesthetize the tigers before applying the dye to their coats; and, unfortunately, one of the tigers simply never woke up from the anesthesia (a known problem with cats). Coscarelli felt horrible about the unexpected death; but, in fairness to him, the decision to anesthetize and dye the tigers was not his choice.