In 1993, Brandon Lee, the son of late martial arts legend Bruce Lee, died due to a tragic mistake while filming The Crow. In the scene in question, a character called Funboy shoots Lee's character, Eric, while he's carrying a grocery bag. The gun was meant to be loaded with blanks, and a small "squib" would detonate in the grocery bag to simulate the actual gunshot. Lee was actually shot, though, and died that night. According to reports, no one knows how a real bullet got into the gun in question.
Perhaps the strangest part about the death is its uncanny resemblance to a scene from his father's final film, The Game of Death. In the scene, Bruce Lee is filming a movie within a movie. He's supposed to be shot, to pretend to die of gunshot wounds, but gets hit by a real bullet.