Visible crew/equipment: When Sarah and Sky are talking in the mission, Sarah, is trying to get him to leave and he insists he needs private lessons from her. Sarah says something along the lines of, "Well, our doors are always open, come back anytime." On this line, she crosses to the front door, opens it, and the viewer is treated to a full view of the Havana set, complete with the word "Havana" written on it.
Guys and Dolls (1955)
1 visible crew/equipment mistake
Directed by: Joseph L. Mankiewicz
Starring: Marlon Brando, Frank Sinatra, Jean Simmons, Vivian Blaine
Continuity mistake: Right before the "Pet Me Poppa" number, there is a shot showing some sort of smoky substance lurking on the stage. The shot also includes a man walking onto the stage. The shot changes to a close up shot of him making an announcement, and the smoke is gone. When the shot changes to show the entire stage the smoke is there again.
Big Jule: Well, I used to be bad when I was a kid, but ever since then I've gone straight, as has been proved by my record: Thirty-three arrests and no convictions.
Trivia: Nathan was added into Nicely and Benny's number 'Guys and Dolls' to increase Sinatra's singing part.