Trivia: Sean Connery started going bald when he was 21. In 'Dr. No' (he was 32 then) and any subsequent movies in which he has hair, he was actually wearing a hairpiece.
Suggested correction: Contrary to popular belief, Sir Sean Connery was not wearing a hairpiece in his first two outings as James Bond. Although he was already balding by the time Dr. No was in production, he still had a decent amount of hair and the filmmakers used varying techniques to make the most of what was left. By the time of Goldfinger (1964), Connery's hair was too thin and so various toupees were used for his last Bond outings.
Trivia: Because Dr No's lair is underwater, you can see fish swimming through the windows. However, an error was made when using footage of fish, so they look larger than they should. In order to get around this, they added in dialogue where Dr No explains how the window works like a magnifying glass.
Trivia: Roger Moore was Fleming's original choice to play 007, but he was under a network contract for the television show "The Saint". Other actors who were considered for the role of James Bond included Cary Grant, Trevor Howard, Rex Harrison, and David Niven – he would play the role of Bond in the spoof 1967 film "Casino Royale".
Trivia: In the scene in Dr No's apartments, Bond does a double-take at a painting displayed on an easel. It was in fact a copy of Goya's "The Duke of Wellington", the original of which had been stolen in a raid on a museum shortly before filming began. Producers thought that it would be interesting to conceive that "Dr No" himself had arranged for the real-life theft.
Trivia: Though this is the first James Bond film produced by MGM, it is not the first Bond film. The first one was a made-for-TV adaptation of Ian Fleming's book, Casino Royale.
Trivia: Ursula Andress was dubbed throughout the film by Monica Ver der Zyl, with the exception of when she sings "Underneath The Mango Tree" when she first appears. Her singing voice was then provided by actress Diana Coupland, best known for her role in the 1970s British sitcom "Bless This House".
Trivia: The role of Sylvia Trench was originally offered to Lois Maxwell, who instead went on to play "Miss Moneypenny" for the next 14 Bond films.
Trivia: Ian Fleming wanted his cousin, Christopher Lee, to play "Dr. No". Due to other projects, Lee had to turn the role down but was later cast as "Scaramanga" in "The Man With The Golden Gun". Actor Max Von Sydow was also offered the part; he would later be cast as "Ernst Stavro Blofeld" in the non-Eon film "Never Say Never Again".
Trivia: A mistake in translation saw the film being released in Japan with the title - "We Don't Want A Doctor".
Trivia: The actor appearing in the gun barrel sequence at the beginning of the film is actually stunt man Bob Simmons. The same gun barrel with Simmons was used for the first three Bond movies.
Trivia: Ursula Andress was offered the role after the producers saw a picture of her in a wet T-shirt contest.
Trivia: Ian Fleming didn't like the casting choice of Sean Connery, saying he was "too thuggish" to be Bond. After seeing the film, Fleming liked him enough that he went back and ret-conned Bond's biography to make him Scottish.
Trivia: Crab Key is an anagram of "Car Key B", which was writer Ian Fleming's favourite key for opening his car.
Trivia: The film was supposed to cost $1 million, but when the budget overran by $100,000, the studio seriously considered shutting down the entire production.
