The Lord of the Rings The Two Towers (2002)
Viggo Mortensen broke his toe kicking a helmet during filming, and the scream in the scene is his real reaction to the injury.
The Silence of the Lambs (1991)
Anthony Hopkins appears on screen for less than 20 minutes, yet his performance as Hannibal Lecter won the Academy Award for Best Actor.
Guardians of the Galaxy (2014)
Chris Pratt accidentally dropped the Infinity Stone prop during filming, but the moment looked so natural that it was kept in the final movie.
The Dark Knight (2008)
Heath Ledger reportedly kept a private journal while developing the Joker character, filling it with images and ideas that helped shape his performance.
Titanic (1997)
James Cameron personally drew the sketch of Rose that appears in the movie. The hands seen in the scene are actually Cameron’s.
Alien (1979)
Most of the actors did not know exactly what would happen during the chestburster scene, so their shocked reactions were partially genuine.
