Yes, this is the film that's in every critics top 10 list of the scariest movies of all time. Based on the novel by William Peter Blatty, with a story that was supposedly based on actual events, many may remember seeing this in theaters and witnessing the audience vomiting, fainting, screaming, and even leaving. It was apparently so bad that paramedics were on call, and all this hysteria caused the film to be considered one of the most "controversial" movies of all time.