With the cinematic version of '50 Shades Of Grey' in the pipeline and the much-hyped and controversial 'Nymphomaniac' and 'Adore' due to hit the big screen, we're beginning to think that 2013 could be the year of the sex film.
But they won't be the first salacious mainstream movies to raise an eyebrow or five. There have been plenty of others that have got audiences' knickers in a twist over the years.
From people getting their kicks from car crash victims in 1996's 'Crash' to bestiality in 2006's 'Let Sleeping Dogs Lie' via errrm, doll sex (thankyou 'Bride Of Chucky'), there have been plenty of imaginative ways to get sex on to celluloid.
Take a look at what other movies with strange sex plots made our list below...
"Black Snake Moan" (2006)
After being left for dead on the side of the road, a nymphomaniac (Christina Ricci) is rescued by a fanatically religious farmer (Samuel L. Jackson) who attempts to cure her and absolve her sins by chaining her to his radiator.
"Bride of Chucky" (1998)
Doll sex. In front of a fireplace. That's all you need to know.
After an elderly man dies while pleasuring himself in the convenience store's bathroom, Caitlin (Lisa Spoonhauer) inadvertently -- and rather enjoyably -- has sex with the dead body, thinking it's her boyfriend Dante (Brian O'Halloran).
Easily one of the most bizarre fetishes depicted in film, David Cronenberg's "Crash" offers a subculture in which car accidents serve as instant Viagra. After a film producer (James Spader) has a head-on collision, he and his wife (Deborah Kara Unger) enter the illicit world in hopes of enhancing their sex life.
"Cruel Intentions" (1999)
Kissing step-siblings, interfamily deceit and virgin deflowerings are at the center of this lascivious drama. Ryan Phillippe and Sarah Michelle Gellar are dangerously close for step-siblings, and the prep-school vixen challenges her sort-of brother to devirginize a new student (Reese Witherspoon) in return for sexual favors.
"Hollow Man" (2000)
After discovering a serum that makes him invisible, a scientist (Kevin Bacon) uses his newfound ability to rape his unsuspecting neighbor (Rhona Mitra).
The most classic creepy-sex story, "Lolita" features 36-year-old Humbert Humbert pursuing a relationship with 14-year-old Lolita (Sue Lyon).
"Sleeping Dogs Lie" (2006)
This list wouldn't be complete without a touch of bestiality. "Sleeping Dogs Lie" provides a portrait of a woman whose engagement ends in disaster after she finally admits she gave her dog oral sex in college.
"Spanking the Monkey" (1994)
David O. Russell's Sundance favorite makes all other strange mother-son relationship stories look tame. When a teenage boy (Jeremy Davies) is forced to stay home for the summer and take care of his ailing mother who broke her leg (Alberta Watson), the two embark on an incestuous relationship.
"The Exorcist" (1973)
It's not commonly thought of as a movie with strange sexcapades, but one of the most famous scenes in "The Exorcist" offers exactly that. As the possessed Regan (Linda Blair) reaches the height of her demonic takeover, she violently masturbates with a crucifix, horrifying her mother (Ellen Burstyn) and Catholics everywhere.
"The House of Yes" (1997)
A former psychiatric patient (Parker Posey) flips when her brother (Josh Hamilton), with whom she had sexual relations as a teenager, returns home with a fiancée (Tori Spelling).
"Wild Things" (1998)
This erotic cult classic offers a ménage à trois that leads to a high school guidance counselor (Matt Dillon) being accused of raping two female students (Denise Richards and Neve Campbell) in a twisted plot that turns out to be about much more than graphic sex.
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