In The Shining, which many regard as one of the most chilling horror films ever made, the deranged Jack Torrance, played by Jack Nicholson, stuns his wife, Wendy (Shelley Duvall), when he produces the novel that he has spent weeks slaving over. Yet, instead of a completed manuscript, there were just dozens of pieces of paper with the words ‘All work and no play makes Jack a dull boy’ typed over and over again – Wendy’s first real clue that her husband had gone mad. (You can see it here).