Revealing mistake: Near the beginning, after the corporal has burned his finger and tells the other corporal that Lawrence is balmy, O'Toole begins to run up the stairs to meet with a general. After O'Toole is out of view of the camera, you can tell he has stopped running up the stairs by his shadow on the wall not moving, because he knows that the director is about to shout "cut".
Lawrence of Arabia (1962)
1 revealing mistake - chronological order
Directed by: David Lean
Starring: Peter O'Toole, Anthony Quinn, Alec Guinness, Claude Rains, Jack Hawkins
Factual error: In the foreground of the Aqaba raid scene, Turks are using a Browning M1919 machine gun, which wasn't yet designed and certainly would not be available to the Turkish Army.
Prince Feisal: You, I suspect, are chief architect of this compromise. What do you think?
Mr. Dryden: Me, your Highness? On the whole, I wish I'd stayed in Tunbridge Wells.
Trivia: Director David Lean has a cameo as the motorcyclist at the Suez Canal who cries out to Lawrence, "Who are you?"