Holy Motors (2012)
The WTF Movie: Leos Carax's long-awaited return confirms him as an art-house agent provocateur, as he unleashes Denis Lavant - a kind of French Mr Benn - on the world in a variety of increasingly bizarre disguises.
Drop Your Popcorn Moment: Lavant, dressed as a monster in a suit, kidnaps Eva Mendes. As you do.
Kill List (2011)
The WTF Movie: Ben Wheatley's second film starts as Mike Leigh-esque domestic satire, veers into ultra-violent hitman thriller and then really starts to get weird.
Drop Your Popcorn Moment: Hitmen Jay and Gal interrupt a pagan sacrifice, and the masked cult swarms after them into their escape tunnel.
The Fountain (2006)
The WTF Movie: Hugh Jackman and Rachel Weisz fall in love across the ages, in Darren Aronofsky's trippy, time-hopping parable of interconnectedness.
Drop Your Popcorn Moment: Jackman's future alter-ego shows up, shaven-headed like a Buddha, inside a giant bubble.
The Testament Of Dr Mabuse (1933)
The WTF Movie: Fritz Lang's anti-Nazi parable about a supposedly catatonic crime lord who instructs his minions from his cell using thought control.
Drop Your Popcorn Moment: The head of a mental asylum gets a visit from the late Dr Mabuse, now a spectral apparition.
The WTF Movie: Jim Henson channels all of his weirdest ideas as Muppet-master into this Lewis Carroll-esque fantasy about a girl (Jennifer Connelly) under threat from the Goblin King (David Bowie).
Drop Your Popcorn Moment: Bowie performs Magic Dance with a troupe of monster Muppets.
The WTF Movie: Jean-Luc Godard gets dark with the fable of a bourgeois couple who take a road trip to kill the woman's parents for their money, only to be beset by endless car crashes and a commune of Marxist cannibals.
Drop Your Popcorn Moment: Trying to leave Paris, the couple is caught in traffic - an eight-minute tracking shot full of strangeness.
The Tree Of Life (2011)
The WTF Movie: Terrence Malick charts the beginning of life on Earth, while Sean Penn tries to figure out what dinosaurs have to do with his childhood in 1950s Texas.
Drop Your Popcorn Moment: A moment of transcendental grace as Penn's mom (Jessica Chastain) hovers in mid-air.
Jacob's Ladder (1990)
The WTF Movie: A Vietnam vet (Tim Robbins) starts to crack up on his return to America when he sees horrific apparitions.
Drop Your Popcorn Moment: The explain-it-all twist ending.
Mulholland Dr. (2001)
The WTF Movie: Originally conceived as a pilot for a TV show, David Lynch's Hollywood-set nightmare proved too perplexing for studios to greenlight.
Drop Your Popcorn Moment: A man unwisely decides to check behind his local diner, scene of a freakish dream he'd had.
Little Otik (2000)
The WTF Movie: Jan Švankmajer's surreal comedy about a couple who decide to raise a tree stump as their child, only to find it coming to life.
Drop Your Popcorn Moment: Otik reveals an insatiable appetite by chomping on its mother's hair.
The 5,000 Fingers Of Dr T (1953)
The WTF Movie: Dr Seuss wrote this kids' nightmare about a boy forced to join 499 other children at the keys of a mad teacher's giant piano.
Drop Your Popcorn Moment: The Elevator Song , sung by an operator dressed as an executioner who offers such delights as "assorted simple tortures, molten lead, chopping blocks and hot boiling oil."
Uncle Boonmee Who Can Recall His Past Lives (2010)
The WTF Movie: This Palme D'Or winner from Apichatpong Weerasethakul wove Thai folk-tales through laidback art-house stylings to conjure up a hallucinatory, supernatural world.
Drop Your Popcorn Moment: A princess has sex with a talking catfish.
A Scanner Darkly (2006)
The WTF Movie: Richard Linklater uses image-scrambling rotoscope animation to visualise the mind-bending concept of Philip K. Dick's novel about an undercover narc (Keanu Reeves) succumbing to the effects of new drug Substance D.
Drop Your Popcorn Moment: Reeves dons the "scramble suit," a form of identity protection that continually morphs and blurs his features.
Synecdoche, New York (2009)
The WTF Movie: Frustrated theatre director Caden Cotard (Philip Seymour Hoffman) embarks on his greatest venture - an ongoing recreation of the entire city of New York in a huge warehouse populated by a cast of thousands.
Drop Your Popcorn Moment: The 'play' reaches the point where Caden created the play, forcing him to cast long-term stalker Sammy (Tom Noonan) as 'Caden' in the 'play within a play.'
The City Of Lost Children (1995)
The WTF Movie: Jean-Pierre Jeunet and Marc Caro make their debut, Delicatessen , look like neo-realism with the tale of a child-stealing scientist aided by multi-cloned Dominique Pinon an a talking brain in a jar.
Drop Your Popcorn Moment: The opening dream sequence, in which a boy's house is invaded by dozens of Santa Clauses.
The WTF Movie: Andrei Tarkovsky's rain-soaked sci-fi movie sees the titular guide lead two men on an illegal journey into the Zone, where their innermost desires will be met.
Drop Your Popcorn Moment: The men find the Room at the centre of the Zone… and change their minds about going in.
Naked Lunch (1991)
The WTF Movie: David Cronenberg gets the mugwump jism up in every verse, as he adapts William S. Burroughs' notorious tale of a drug-addicted writer's adventures in the Interzone.
Drop Your Popcorn Moment: Writer William Lee (Peter Weller) discovers that his typewriter has transformed into a bug and started talking to him.
Altered States (1980)
The WTF Movie: Ken Russell, no stranger to WTF-ery, embroils William Hurt in bizarre experiments with sensory deprivation and psychotropic drugs that leave him, shall we say, changed.
Drop Your Popcorn Moment: Hurt is crucified while wearing the head of a seven-eyed goat.
The WTF Movie: Catherine Deneuve goes crazy in a London flat in Roman Polanski's poison-pen letter to the Swinging Sixties.
Drop Your Popcorn Moment: Deneuve is attacked by arms breaking through the walls of the flat.
The WTF Movie: Darren Aronofsky's debut steals back the blueprint for the indie career debut from Tarantino by going the other way: the lo-fi, B&W weirdness of a mathematician hounded by a Jewish cult.
Drop Your Popcorn Moment: Tortured genius Max (Sean Gullette) realises there's only one way of numbing the pain, and reaches for a power drill.
Lost Highway (1997)
The WTF Movie: For those who thought Twin Peaks was too mainstream, David Lynch pulls out the cinematic rug by turning Bill Pullman into Balthazar Getty halfway through the film.
Drop Your Popcorn Moment: Pullman meets the Mystery Man (Robert Blake) at a party, and then discovers he's also at Pullman's house AT THE SAME TIME.
Carnival of Souls (1962)
The WTF Movie: Herk Harvey's cult classic B-movie about a woman, Mary, who takes a job in a town only to find the inhabitants terrorised the pallid ghoul The Man and lured into a trance by organ music.
Drop Your Popcorn Moment: Mary looks towards a car window and sees the face of The Man reflected back at her.
The Happiness Of The Katakuris (2001)
The WTF Movie: To be honest, half a dozen Takashi Miike films might have made this list, but it's hard to beat this for weirdness - a musical horror about a family running a corpse-strewn B&B.
Drop Your Popcorn Moment: A woman is attacked by a claymation demon who's hiding in her soup.
The WTF Movie: Kids discover that their local undertaker - the Tall Man - is a shape-shifting superhuman weirdo who uses homicidal flying spheres to convert the funeral home's corpses into undead dwarfs.
Drop Your Popcorn Moment: A woman stabs her lover to death during sex, and then "she" transforms into the Tall Man.
The Wicker Man (1973)
The WTF Movie: Pagan horror, British style, as Edward Woodward's virginal copper realises it's not all hippy-dippy free love on Summerisle.
Drop Your Popcorn Moment: The first sign that all is not right with these people, as a child is cured of a sore throat by having a frog placed in its mouth.
Donnie Darko (2001)
The WTF Movie: Richard Kelly's instant cult classic about a teenager (Jake Gyllenhaal) stuck in a world-threatening 'tangent universe' when he mistaken escapes a jet engine falling on his bedroom.
Drop Your Popcorn Moment: Donnie meets Frank (a dead man in a Halloween rabbit costume) who tells him the world will end in 28 days, 6 hours, 42 minutes and 12 seconds.
The WTF Movie: Tod Browning's drama about carny folk using real-life "freakshow" performers to achieve its disquieting, decidedly non-politically-correct atmosphere.
Drop Your Popcorn Moment: The armless, legless Human Torso (Prince Randian) rolls and lights his own cigarette using just his tongue.
The Exterminating Angel (1962)
The WTF Movie: Luis Bunuel's surrealist classic about a dinner party whose guests find, inexplicably, that they cannot leave the house.
Drop Your Popcorn Moment: Sheep break into the house; the guests pounce in order to slaughter and eat them.
The Cabin In The Woods (2012)
The WTF Movie: Joss Whedon and Drew Goddard screw with expectations by revealing exactly what's going on beneath the archetypal 'cabin in the woods' scenario.
Drop Your Popcorn Moment: Movie monsters, assemble.
The WTF Movie: Ever thought the upper classes were a different breed? In Brian Yuzna's gory satire, it turns out those fears are not unfounded.
Drop Your Popcorn Moment: The rich introduce their favourite pastime, 'shunting' - an orgy of gross physical melding in which the gestalt flesh literally feasts on the poor.
Barton Fink (1991)
The WTF Movie: The Coen brothers tackle Hollywood in the story of Fink (John Turturro), a playwright who inadvertently enlists the help of madman Charlie Meadows (John Goodman) to write his wrestling movie screenplay.
Drop Your Popcorn Moment: Goodman flips out in a burning hotel corridor, screaming, "I'll show you the life of the mind."
The Holy Mountain (1973)
The WTF Movie: Alejandro Jodorowsky dropped acid and fed magic mushrooms to his cast to better capture the trance-like spirituality of his movie about a sacred journey.
Drop Your Popcorn Moment: The trip up the mountain is delayed by a visit to the Pantheon Bar - a party in a cemetery.
The Cabinet Of Dr Caligari (1919)
The WTF Movie: The original mindfuck movie, as mad Dr Caligari uses a sleep-walking patient as a murderer against a backdrop of crazily skewed sets and camera angles.
Drop Your Popcorn Moment: The original mindfuck twist ending, as it's revealed that hero Francis is a mental patient under the real Caligari's care.
The WTF Movie: Once-banned "video nasty," in which Sam Neill discovers his wife Isabelle Adjani is cheating on him with the product of her miscarriage - a monstrous, tentacled creature.
Drop Your Popcorn Moment: Adjani has an emotional breakdown as she miscarries in a subway tunnel - a scene so raw and uncomfortable it comes as little surprise that the actress attempted suicide soon after.
The WTF Movie: Ingmar Bergman's psychodrama about a mute actress whose personality begins to merge with her nurse is the result of the director's bedside hallucinations while recovering from pneumonia.
Drop Your Popcorn Moment: The opening sequence - a disturbing montage of surreal imagery of sex and violence.
Tetsuo: The Iron Man (1989)
The WTF Movie: A Japanese businessman is transformed into a cyborg by a sleazy Metal Fetishist in Shinya Tsukamoto's cyberpunk-flavoured live-action manga.
Drop Your Popcorn Moment: The man discovers his penis has turned into a power drill.
Inland Empire (2006)
The WTF Movie: Actress Nikki Grace (Laura Dern) discovers that her latest movie is plagued by a Polish curse. Meanwhile, a family of rabbits goes about its business. Yes, it's another David Lynch film.
Drop Your Popcorn Moment: Dern's features distort into a bug-eyed, grinning monstrosity.
The WTF Movie: Terry Gilliam married his visual imagination to politics to create a vivid Orwellian nightmare about the perils of bureaucracy.
Drop Your Popcorn Moment: Jonathan Pryce dreams himself into becoming a winged avenger doing battle with a giant samurai warrior.
Enter The Void (2009)
The WTF Movie: An out-of-body experience from Gaspar Noe, as a dead drug dealer floats above the streets of Tokyo watching his sister having sex.
Drop Your Popcorn Moment: The vagina's point-of-view shot, as a penis ejaculates into the camera.
The WTF Movie: Delayed for two years while the studio execs got their head around it, Nicolas Roeg and Donald Cammell joined forces to chart the symbiotic descent in drug-filled madness of a gangster (James Fox) and a rock star (Mick Jagger, aptly cast).
Drop Your Popcorn Moment: Fox freaks out under the influence of psychotropic drugs.
The Wizard Of Oz (1939)
The WTF Movie: Blunted by familiarity, maybe, but consider that this is a film about a tornado whisking a girl to a world populated by witches and Munchkins, where her best friends are a scarecrow, a tin man and a talking lion. At the very least, it's a 'What The Heck?' movie.
Drop Your Popcorn Moment: The Wicked Witch of the West sends her army after Dorothy. An army of FLYING MONKEYS.
The WTF Movie: What do you need to raid a man's dreams? According to Christopher Nolan's blockbuster mind-fuck, you need an architect, a chemist, a forger and, of course, a dreamer.
Drop Your Popcorn Moment: Dominick Cobb (Leonardo DiCaprio) shows budding architect Ariadne (Ellen Page) the power of dreams by folding a city skyline in on itself.
Spirited Away (2001)
The WTF Movie: Hayao Miyazaki's fantasy goes through the looking glass into a world where parents are turned into pigs and a witch runs a bathhouse for the spirit world.
Drop Your Popcorn Moment: The bathhouse is invaded by a gigantic stink spirit.
The Thing (1982)
The WTF Movie: Studios hoping for a hit were as freaked out as audiences when John Carpenter pushed the limits of SFX to reveal what 'alien' truly meant.
Drop Your Popcorn Moment: An attempted defibrillation goes awry when the patient's stomach bites the doctor's hands off and its head sprouts legs and scuttles away.
The WTF Movie: Shane Carruth's brain-teaser depicts time travel the way it probably would be in real-life: discovered by accident, boring to actually do and absolutely mind-boggling.
Drop Your Popcorn Moment: At whatever point you need to hands to scratch your head in incomprehension.
Being John Malkovich (1999)
The WTF Movie: A puppeteer (John Cusack) gets a job on the seventh-and-a-half floor of a skyscraper, where he discovers a portal into the head of actor John Malkovich. Honestly, we're not making this up.
Drop Your Popcorn Moment: Malkovich enters his own head and discovers that everybody, regardless of race, age or gender, is John Malkovich.
The WTF Movie: David Cronenberg tackles the thorny issue of video nasties as porn-merchant James Woods discovers there's more to his latest acquisition - S&M channel Videodrome - than meets the eye.
Drop Your Popcorn Moment: Woods develops a vaginal-like wound in his stomach, through which his enemies insert videotapes to brainwash him.
Un Chien Andalou (1929)
The WTF Movie: Luis Bunuel and Salvador Dali lay the framework for all future WTF movies in twenty minutes of freeform, taboo-trashing surrealism.
Drop Your Popcorn Moment: The eye slicing, of course. Even knowing that it's really a dead calf's eyeball doesn't make it any easier to watch.
2001: A Space Odyssey (1968)
The WTF Movie: History according to Stanley Kubrick - black monoliths teach apes to kill, computers to go mad and humans to turn into giant space babies.
Drop Your Popcorn Moment: Astronaut Dave Bowman (Keir Dullea) goes 'beyond the infinite' into a kaleidoscopic tunnel of light and otherworldly noise.
The WTF Movie: A man, his monster baby and the lady in the radiator - while Hollywood messes around with horses' heads, David Lynch perfects the art of messing with our heads.
Drop Your Popcorn Moment: A taste of things to come as Henry (Jack Nance) tries to carve a roast chicken and it writhes and bleeds on the plate.