The Human Centipede was banned altogether from Icelandic, British, and Australian theaters and released in the US without a rating. Its sequel, The Human Centipede 2, was placed under even heavier bans due to its exacerbation of the horrific elements in the first film.

11 The Exorcist (1973)\n\n The film was banned upon release in different cities in the United States as well as the United Kingdom and remains one of the scariest horror movies of all time and an influential classic.