Remember that moment in The Ring when the creepy child with the wet hair climbs out of the television set?
Or in Poltergeist when that deadly cheerful looking clown was suddenly no longer sitting on the bedroom chair where the cute little kid had left it.
Even the recent ones, like Paranormal Activity when after what seems like hours of creepy noises and footsteps, the unseen force haunting Micah and Katie finally grabs hold of Katie and drags her away to her doom.
Every horror film has its 'moment' - the one that sticks with you once the lights come back on. And in dear Dundee, there is an entire festival celebrating the very best of them.
The Dundead Horror Film Festival creeps its way back into the city this month with 13 terrifying screenings including a UK premiere, several previews, a John Carpenter/Kurt Russell retrospective and three early cinema classics.
As the organisers have promised, "it's going to be hellishly good".
The festival begins on April 30 with a call out for the best horror-themed fancy dress for a special horror quiz at the DCA.
The UK premiere of The Badger Game takes place on May 1, a dark comedy written and directed by Joshua Wagner and Thomas Zambeck.
The film centers on a trio of scorned women who conspire to abduct and blackmail a wealthy philanderer.
Things go awry when unforeseen complications - and ulterior motives - pit the kidnappers against each other.
There's a brief romp through the vintage flicks with Frankenstein, The Thing and Dracula before shivering back round to the likes of The Canal, a sinister foray into the mind of film archivist David (Rupert Evans) and his missing wife.
The shadows in this Irish ghost story aren't what they seem...
And Elijah Wood is back and as far away from the happy shire as can be in Open Windows an English-language Spanish thriller film directed and written by Nacho Vigalondo...
So if you want to send a shiver down your spine at the bank holiday weekend, check out the line-up and sign up for a scare.