Shocking films are not the same as horror films.  While a horror film can be shocking, not all shocking films are scary.  Many films of the sensational variety fall under several genres including comedy, drama, and even documentary.  The key ingredient to all of the films on the list below is that they are, by far, the most provocative pieces I have ever had the privilege to view.

Be forewarned most of the movies on this list are not pleasant.  The majority of them are not meant to be.  If you have seen any of the movies on this list, let us know what you thought.  Is there a title that should be on here?

AGE RESTRICTION WARNING: The content below features graphic depictions that are not appropriate for those under the age of 18.  If you are not 18 years of age or older, please click here now.

A Serbian Film (Uncut)
RATING: NC-17 (for extreme aberrant sexual and violent content including explicit dialogue.)  
A Serbian Film (Srpski Film) - Official Trailer
Runtime: 1 hr. 43min.
Directed By: Srdjan Spasojevic
Written By: Srdjan Spasojevic, Aleksandar Radivojevic
Cannibal Holocaust
RATING: NC-17 (for disturbing violent and sexual content including graphic nudity, and language)  
Cannibal Holocaust (1980) - Theatrical Trailer
Runtime: 1 hr. 35 min.
Directed By: Ruggero Deodato
Written By: Gianfranco Clerici
The Exorcist
RATING: R (for strong language and disturbing images)  
THE EXORCIST - Trailer - (1973) - HQ
Runtime: 2 hr. 2 min.
Directed By: William Friedkin
Written By: William Peter Blatty
Sweet Movie
RATING: UNRATED   
Sweet Movie Trailer
Runtime: 1 hr. 39 min.
Directed By: Dusan Makavejev
Written By: Dusan Makavejev
Saló or 120 Days of Sodom
RATING: NC-17 
Runtime: 1 hr. 57 min.
Directed By: Pier Paolo Pasolini
Written By: Sergio Citti
Antichrist
RATING: Unrated
Runtime: 1 hr. 44 min.
Directed By: Lars von Trier
Written By: Anders Thomas Jensen, Lars von Trier
Martyrs
RATING: R (for disturbing/severe aberrant behavior involving strong bloody violence, toture, child abuse and some nudity)
Martyrs (Trailer) in DVD e Blu-Ray su thrauma.it
Runtime: 1 hr. 37 min.
Directed By: Pascal Laugier
Written By: Pascal Laugier
Aftermath
RATING: Unrated
Aftermath 1994 Trailer
Runtime: 30 min.
Directed By: Nacho Cerdà
Written By: Nacho Cerdà
Irréversible
RATING: Unrated 
Runtime: 1 hr. 37 min.
Directed By: Gaspar Noe
Written By: Gaspar Noe
Happiness
RATING: Unrated (for explicit dialogue and some visuals relating to aberrant sexual behavior)
Happiness - Trailer
Runtime: 2 hr. 14 min.
Directed By: Todd Solondz
Written By: Todd Solondz
Men Behind the Sun
RATING: Unrated
黑太陽731 Men Behind The Sun (1988) Trailer
Runtime: 1 hr. 45 min.
Directed By: Tun Fei Mou
Written By: Tun Fei Mou
In a Glass Cage
RATING: Unrated
IN A GLASS CAGE HD Trailer
Runtime: 1 hr. 50 min.
Directed By: Agustí Villaronga
Written By: Agustí Villaronga
Audition
RATING:
Runtime: 1 hr. 55 min.
Directed By: Takashi Miike
Written By: Daisuke Tengan
A Clockwork Orange
RATING: R (adult situations/language, nudity, violence)
Runtime: 2 hr. 17min.
Directed By: Stanley Kubrick
Written By: Stanley Kubrick
Requiem for a Dream
RATING: R (for intense depiction of drug addiction, graphic sexuality, strong language and some sexuality)
Requiem For A Dream [Official US Trailer]
Runtime: 1 hr. 34 min.
Directed By: Darren Aronofsky
Written By: Darren Aronofsky, Hubert Selby Jr., Hubert Selby
Pink Flamingos
RATING: NC-17 
Pink Flamingos Trailer
Runtime: 1 hr. 35 min.
Directed By: John Waters
Written By: John Waters
August Underground’s Mordum
RATING: Unrated
August Underground's Mordum Found Footage Trailer
Runtime: 1 hr. 34 min.
Directed By: Jerami Cruise
Guinea Pig 2 – Flowers Of Flesh And Blood
RATING: R (for disturbing violent and sexual content including graphic nudity, and language)
Runtime: 1 hr. 34 min.
Directed By: David Robert Mitchell
Written By: David Robert Mitchell
Un Chien Andalou
RATING: Unrated
Un Chien Andalou Trailer Original
Runtime: 20 min.
Directed By: Salvador Dalí, Luis Buñuel
Written By: Salvador Dalí, Luis Buñuel
Titicut Follies
RATING: Unrated TiticutFolliesPoster
Runtime: 1 hr. 24 min.
Directed By: Frederick Wiseman
Written By: Frederick Wiseman

About the Author

Norman Gidney is a nearly lifelong horror fan. Beginning his love for the scare at the age of 5 by watching John Carpenter's Halloween, he set out on a quest to share his passion for all things spooky with the rest of the world.