What is the most famous or controversial movie featuring explicit sex scenes, and which factors contribute to its notoriety?

The NC-17 rating was introduced in 1990 to replace the X rating, which was seen as too restrictive.

Henry & June was the first film to receive this rating.

The movie "9 Songs" (2004) features several scenes of real sex, including oral sex and ejaculation.

"Intimacy" (2001) was the first film to feature explicit sex scenes and nudity, sparking controversy in the UK.

"Nymphomaniac" (2013) features over 90 minutes of explicit sex scenes, making it one of the most explicit films ever made.

The film "Blue Valentine" (2010) features a graphic sex scene that sparked controversy and earned the film an NC-17 rating.

"Crash" (1996) features a graphic sex scene between James Spader and Deborah Kara Unger, which was considered explicit for its time.

"Bad Lieutenant" (1992) features a graphic sex scene between Harvey Keitel and Victor Argo, which earned the film an NC-17 rating.

The film "Shame" (2011) features a graphic sex scene between Michael Fassbender and Amy Hoggart, which sparked controversy.

The Wachowski siblings' directorial debut "Bound" (1996) features a graphic sex scene between Jennifer Tilly and Gina Gershon.

The film "The Dreamers" (2003) features a graphic sex scene between Michael Pitt and Eva Green, which sparked controversy.

"Lust, Caution" (2007) features explicit sex scenes, including a graphic love scene between Tang Wei and Tony Leung Chiu-Wai.

The film "Blonde" (2022) features explicit sex scenes, including a graphic love scene between Ana de Armas and Adrien Brody.

The movie "Paris 13th District" (2021) features explicit sex scenes, including a graphic threesome scene.

The film "Passages" (2023) features explicit sex scenes, including a graphic love scene between Franz Rogowski and Ben Whishaw.

The movie "Blonde" (2022) was based on a novel of the same name, which was inspired by Marilyn Monroe's life.

The film "Crash" (1996) was based on a novel of the same name, which explored themes of sexuality and violence.

The movie "Shame" (2011) was inspired by the director Steve McQueen's own experiences with sex addiction.

The film "Nymphomaniac" (2013) was inspired by the director Lars von Trier's own experiences with sex addiction.

The movie "Love" (2015) was inspired by the director Gaspar Noé's own experiences with relationships and sexuality.