The 21 Best NC-17 Movies to Stream Tonight

Ryan Gosling and Michelle Williams stunned in the critically acclaimed drama "Blue Valentine" about the dissolution of a couple's marriage. The film originally received an NC-17 rating because of the scene where Gosling's character performs oral sex on Williams's character, but Gosling called out the MPAA for sexism and misogyny, saying that if a woman were performing oral sex on a man, the film would have received an R rating. The rating was eventually appealed and changed to R, but we've included the movie here anyway because it's so spicy.

Watch "Blue Valentine" on Amazon Prime.