Did You Know?

To make the baboons attack the car in the Windsor Zoo park scene, an official from the zoo was in the back seat of the car with a baby baboon, but the baboons had no response at all. They then took the head of the baboons, and the baboons outside went crazy. Lee Remick's terror as the baboons attack the car was real.

Having changed its title from "The Antichrist" to "The Birthmark," the film seemed to fall victim to a sinister curse. Star Gregory Peck and screenwriter David Seltzer took separate planes to the UK...yet BOTH planes were struck by lightning. While producer Harvey Bernhard was in Rome, lightning just missed him. Rottweilers hired for the film attacked their trainers. A hotel at which director Richard Donner was staying got bombed by the IRA; he was also struck by a car. After Peck canceled another flight, to Israel, the plane he would have chartered crashed...killing all on board. On day one of the shoot, several principal members of the crew survived a head-on car crash. The jinx appeared to persist well into post-production... when special effects artist John Richardson was injured and his girlfriend beheaded in an accident on the set of A Bridge Too Far.

As part of its pre-release publicity campaign, and to point out the significance of "the three sixes" as The Sign of Satan, the movie was sneak-previewed nationwide in the USA on 6 June 1976. While audiences inside the theatres were being scared witless by the film, theatre employees were out front, busily putting up specially made posters declaring: "Today is the SIXTH day of the SIXTH month of Nineteen-Seventy-SIX!" Hokey though it was, the gimmick worked quite well, as many a theatre patron literally "freaked-out" upon seeing those posters as they left the previews.

According to director Richard Donner, he talked the noted cinematographer Gilbert Taylor into coming out of retirement to shoot this film.

Rottweilers experienced a surge in popularity in the US after the release of this film.

More than twice the film's original $2.8 million budget was spent on the film's advertising and promotion.

Guglielmo Spoletini and Alf Joint are dubbed by Robert Rietty.

Harvey Stephens, as Damien, was largely chosen for this role from the way he attacked Richard Donner during auditions. Donner asked all the little boys to "come at him" as if they were attacking Katherine Thorn during the church wedding scene. Stephens screamed and clawed at Donner's face, and kicked him in the groin during his act. Donner whipped the kid off him, ordered the kid's blond hair dyed black and cast him as Damien.

In the scene where Gregory Peck goes to see his wife's psychiatrist, at the beginning of the scene notice the inverted cross on the table.

Gregory Peck was given the role of Ambassador Robert Thorn after Charlton Heston turned it down in order to make Midway.

Because Harvey Stephens was so young, Richard Donner found that the best way to direct him was to provoke genuine reactions before the camera. For example, when Damien is angry at being taken to church, Donner got his peeved facial expression by shouting to Stephens off camera "What are you looking at you little bugger? I'll clobber you."

Curtis Harrington was set to direct the movie, but due to studio politics the film was taken away from him. Harrington later described this as the biggest setback of his career.

In the closing scene, Richard Donner used reverse psychology on young Harvey Stephens telling him, "Don't you dare laugh. If you laugh, I won't be your friend." Naturally, Stephens wanted to laugh, and he instead smiled directly into the camera.