#7. Raiders Of The Lost Ark
Producer George Lucas first told director Steven Spielberg about his idea for Raiders of the Lost Ark when they were both on vacation in Hawaii in May 1977. Lucas promised him he had that beat and proceeded to lay out his idea for a swashbuckling throwback adventure movie based on Saturday matinee serials that would eventually become Raiders of the Lost Ark.
In the middle of a wild chase in the markets of Cairo, Indiana Jones runs into a crowd, which disperses to reveal a black-robed warrior handling a large sword. After facing some intimidating sword spinning, Jones decides to conserve some energy, so he takes out his revolver and shoots the villain down. Jones was meant to engage in a massive sword fight with the blade-wielding antagonist, but when Ford came down with food poisoning the day before the shooting, the actor asked if the scene could be altered to be less strenuous. The result is arguably far better than scripted.