Character mistake: After the robots first attack New York City, a series of newspapers is shown. One of the headlines in the French one reads "La Tour Eiffeil est détruite". The proper spelling is "Eiffel" (00:15:55)
Continuity mistake: When Joseph and Polly enter the Ark, we see the door close behind them, the countdown coming to zero. The Mysterious Woman, at the time, is out cold, or at least a dozen meters behind them. Yet, she finds her way onboard the Ark somehow.
More trivia for Sky Captain and the World of Tomorrow
Question: Why is it when the big rocket leaves the atmosphere earth would die?
Chosen answer: The rocket has been rigged to burn the athmosphere if the rocket reachs 100km - the boosters will fire and destroy life.
Dr Wilson