What's the greatest Halloween film of all time?

This got us thinking. There have been many scary films, but what is the scariest of them all?

We'd like to know what you, our frightfully discerning readers, think.

We've thrown together a terrifying 20 and we want your votes.

Yes, we know we've left a few out, like The Blair Witch Project, Don't Look Now, The Haunting, Scream and Sex And The City 2, but while you're voting you can also tell us about your favourite ones we may have missed.

Then, in our horrifying Halloween edition, we'll print both the results of our top 20 vote, and also some of your best alternative suggestions.

Nosferatu (1922)

A silent vampire film starring the extraordinary Max Shreck as the disturbingly creepy Count Orlok. The silence only adds to the film's limtless eerieness. Terrifying.

Dracula (1931)

In a sort of riposte to Nosferatu, seen as a Dracula rip-off despite all its wonders, Bela Lugosi played Dracula not as a freak but as suave and rather cool, and was every bit as unsettling. He set the bar for all vampires.

Frankenstein (1931)

Boris Karloff's turn to play an iconic monster, the man made of parts of other men. Frankenstein was, of course, the mad doctor who made a child in the body of a lumbering thug. Classic.

Psycho (1960)

NEEK NEEK NEEK NEEK! Monsters, we discovered in Psycho, don't have to be vampires or the undead, they can live with their mother (in a manner of speaking) and do very bad things to their hotel guests.

Rosemary's Baby (1968)

A masterful psychological yarn in which Mia Farrow must come to terms with the fact that she may be about to give birth to the actual spawn of Satan. Understandably, she finds it all quite upsetting.

Night Of The Living Dead (1968)

In which the dead rose from the graves and found themselves very peckish, specifically for human flesh. The low-budget and cramped sets only add to the sense of impending disaster outside our doors.

The Wicker Man (1973)

A true original, set on a sunny Scottish isle in which everybody is very strange. Edward Woodward is the chaste policeman searching for a missing girl, but finding only a legendarily awful end, high on a clifftop.

The Exorcist (1973)

The greatest horror film ever made? Some certainly say so, as a young girl finds herself possessed with a malevolent Syrian demon and only world-weary priest Max von Sydow can ask him to leave.

The Omen (1976)

More scary children, as Gregory Peck and Lee Remick adopt a young boy, unaware that he is the antichrist. Everyone around them starts dying in spectacular fashion, and Damien Thorn is the most evil child EVER,

Halloween (1978)

In a sense the proto-slasher film about the indestructible killer Michael Myers had the most pernicious influence on horror, but this is terrific stuff, with Jamie Lee Curtis screaming it up as the heroine.

Alien (1979)

A sci-fi film, surely? Not a bit of it, Alien is ostensibly a magnificent slasher film, where the killer just happens to be an extraterrestrial. Was actually pitched to the studio that made it as 'Jaws in space', which it is.

Salem's Lot (1979)

This is cheating, because this was a TV miniseries later put together, in which writer David Soul moves to the town of Salem's Lot just as it's about to go vampire-crazy. Master vampire Kurt Barlow is just bone-chilling.

The Shining (1980)

HEEEEERE'S Jack Nicholson, holed up in an out-of-season hotel to write a novel, and instead slowly going stark staring mad as there are dark forces in the walls. THAT scene with the axe, we all know and love.

An American Werewolf In London (1981)

Proof that films can be scary and roaringly funny too, John Landis' creature feature has an American tourist struck down by a lycanthrope, and having a rum time every full moon. The climax in the West End has to be seen to be believed.

Poltergeist (1982)

Just pipping the Amityville Horror to the 'something weird going on in the house' crown, Tobe Hooper's chiller sees a family set upon by malevolent ghosts who capture their daughter and imprison her in the television.

A Nightmare On Elm Street (1984)

It's one thing to be an immortal killer with blades for fingers who can't be destroyed - it's another entirely to be able to do so in people's dreams. Step forward Freddie Kreuger, the ultimate reason to stay awake.

The Fly (1986)

The classic of story of boy invents teleporter, boy meets girl, boy uses teleporter and accidentally merges with a housefly. Jeff Goldblum's slow reversion into an insect is deliciously gruesome.

The Lost Boys (1987)

Imagine it: A bunch of vampires all live under a cliff in California and they're all really young and cool and look like goths. Made stars of Kiefer Sutherland, Jason Patric, and the two doomed Coreys, Feldman and Haim.

Silence Of The Lambs (1991)

Sir Anthony Hopkins as Hannibal Lecter. Where do you even start? A lip-smacking portrayal of pure evil, but also a cultured genius. Jodie Foster, really, has to step back and let him steal every scene.

The Sixth Sense (1999)

The ultimate in 'creepy child characters', this has the remarkable Haley Joel Osment as a troubled young man with a unique gift - he can see dead people. Impossible to watch and not get freaked out.