by Doctor Science
This Film Is Not Yet Rated does a great job of exposing many of the deep problems with the movie industry's MPAA ratings, but I think it overlooks a big one. It seems to me that the movie ratings board hands out R and NC-17 ratings based on two general factors: how much they dislike the violence, and how much they like the sex. Just as pornography has been defined as "what turns the Supreme Court on", NC-17 is defined in practice as "what turns the Ratings Board on".
Cut for a major work in the canon of Western art, may be NSFW in parts of the US.