Darth Vader with no mask on
Actor Mark Hamill got a black eye when filming the famous ‘Dianoga‘ attack in the Trash Compactor scene from A New Hope, so to finish the production he was filmed from one side only of his face for the rest of the shooting of that scene.
Carrie Fisher and her stunt double
Carrie Fisher has spoken many times of her struggles with bipolar disorder. You wouldn’t wish this on any anybody. Harrison Ford and her had an affair during the film of A New Hope, even Harrison Ford was married at the time of the film.