Character mistake: When Bond is being flown to Baltimore, Pussy calls her assistant Mai Lee twice on the plane: once in person, then telling the co-pilot to give her instructions. However, when they disembark, she calls her Mai Lai.
Character mistake: Goldfinger is holding a S&W .38 in his plane. Bond says (in his explanation about shooting guns in planes), "That's a Smith and Wesson .45."
Chosen answer: The Beatles were wildly popular with the youngsters of the time and not so with the older generation, of which Bond is part. Obviously, Bond's comment shows the Beatles were not to everyone's taste in music, especially his. And it was a good line for comic relief.
Scott215