Character mistake: While one of the Soviet mission controllers does speak with a native-sounding level of Russian, the other controllers and the cosmonauts sound obnoxious at times; strange anglicisms or outright English words are sprinkled into the script, such as the word "pressure" in the middle of an otherwise Russian sentence, not to mention the many grammatical errors.
You Only Live Twice (1967)
1 character mistake - chronological order
Directed by: Lewis Gilbert
Starring: Sean Connery, Donald Pleasence, Desmond Llewelyn, Bernard Lee, Lois Maxwell, Charles Gray, Akiko Wakabayashi, Mie Hama, Tetsuro Tanba
Plot hole: Right after Bond escapes Blofeld and joins Tanaka and Kissy, they say they need to get to the control room (that Bond just left from). They look at the "front door" to the room, and Tanaka says, "Impossible! It's too well defended!". Why did they not go back the way Bond just came from, through Blofeld's "apartment"? Instead, they fight their way across the entire launching complex and go through another entrance, which also leads through Blofeld's apartment.
James Bond: Do you have any commandos here?
Tiger Tanaka: I have much, much better. Ninjas. Top-secret, Bond-san. This is my ninja training school.
Trivia: For production designer Ken Adam's giant Pinewood volcano set, some 700 tons of steel were used, and some 250,000 square yards of canvas. It featured a working monorail and elevators and cost £1 million to produce.