In the incredibly iconic prom night scene in Brian De Palma‘s Carrie, Carrie is famously covered in pig’s blood which makes her get all killy with everyone at prom. Well, to get the pig’s blood looking just right, the team made a concoction of corn syrup and food coloring and dumped it all over her. Since the sequence afterward took three days to film, Sissy Spacek (Carrie) didn’t bath or shower and even slept in her dress to ensure that the blood stains on her skin and dress all stayed consistent throughout the filming. Now that’s dedication. Spacek also insisted that as many of the shots that involved her character were done by her, even if they could have been done with stunt doubles. This includes the final hand out the ground scene. Spacek was buried in a box on set and shot her hand up all by her lonesome.