Child's Play was actually inspired by this disturbing doll! Robert the Doll was given to Robert Eugene Otto by a disgruntled servant who, according to Otto, knew voodoo. Robert the Doll taunted Robert the boy, and even today, there are reports of disturbing occurrences at the Key West museum where the doll now resides.
In the film Candyman, there is a scene where the Candyman has bees coming out of his mouth. To achieve this effect, they used ACTUAL BEES. The actor who portrayed Candyman, Tony Todd, was stung 23 times!
One of the actors in The Exorcist is an actual serial killer. Paul Bateson, who appears as a hospital technician, eventually confessed to killing and dismembering six gay men in 1970's New York City. He was released from prison in 2004.
Five hundred pounds of dead pets were dropped off to the set of the original Texas Chainsaw Massacre. Director Tobe Hooper wanted dead animals as props to showcase the depravity of his villains, so he contacted the local pound. The pound dropped off its recent kills, but after Hooper saw all the dead cats and dogs, he realized it would be too much, even for a horror film.
Damien, the disturbing child from The Omen, is actually the antichrist. They needed an equally disturbed little actor to play him. Harvey Spencer Stephens, the four-year-old who plays Damien, got the part by punching the director in the balls during the audition.
While filming a scene in Bram Stoker's Dracula, Gary Oldman, who was playing Dracula, felt like the other actors weren't showing enough fear. So he went up to each one of them and whispered something into their ears, terrifying them enough to complete the scene.