Takashi Miike's 1999 horror classic remain perhaps one of his most notorious. The horror is all the more shocking because nothing weird happens in Audition until about halfway through. That finale, though, will leave you wincing.
A distribution company named Intervision dug up Olaf Ittenbach's 1992 German oddity a few years ago, and it instantly made its way into the cult rotation. It's a set of stories told by a mentally ill German kid, involving some pretty extreme damn gore.
Perhaps the granddaddy of all extreme cinema, Roggero Deodato's 1980 cheapie is just as shocking as you've heard, complete with actual animal death on camera, and gore so gritty and realistic, the filmmakers were arrested. They had to produce actors in court to prove they hadn't made a snuff film.
There have been six Guinea Pig films, each one as notorious as the last. The premise of the series is essentially an extended medical experiment to see how much pain the human body can tolerate. The films are also an experiment to see how much terror an audience can tolerate.
Filmmaker Tom Six had a weird idea for a horror movie: Is it medically possible to surgically connect two people mouth-to-anus? This idea was explored in a trio of films, each more disgusting than the last.
Extreme films are usually more troubling if the filmmaking itself is cheap. That's certainly the case with Jörg Buttgereit's 1987 necrophilia flick, one of the most notorious cult movies of the 1980s.
John Waters' 1972 cult giant has been widely seen by now, but many still don't have the stomach to tuck into the NC-17-rated vomitorium. Divine stars as a woman competing to claim the title of Filthiest Person Alive. Filth ensues.
Pier Paolo Pasolini's 1976 update of a tale by The Marquis de Sade is every bit as sick as the source material. It;s about a group of post-war adults who sexually enslave a group of teen orphans and... do things to them. It's ostensibly a criticism of fascism, but it's also difficult to swallow.
This 2010 shocker involves the life of an aging porn superstar and his inability to make ends meet in post-Milošević Serbia. He ends up agreeing (and not agreeing) to do some awful, awful things. It's an economic statement, but more than anything, it's a really, really rough ride.
And what list of extreme films would be complete without the inclusion of a film by the Godfather of Gore himself Herschell Gordon Lewis? His sickest is probably 1970's The Wizard of Gore, about a stage magician that mutilates - and restores - young women on stage.