Visible crew/equipment: Near the beginning of the movie, the old priest is in Northern Iraq and you can see the shadow of a microphone on his hat.
Great sites
Mistakes
As Father Karras lays down, Father Dyer shuts all the lights for him. The lamp on his desk is right over the typewriter the first time we see it than later as he turns it off it has been moved to the left. See more...
Trivia
Author and writer of the book and script William Peter Blatty has a cameo early in this film. He plays the producer trying to have a word with director Burke Dennings on the movie set before Burke turns his attention to Chris MacNeil. William Peter Blatty is the middle eastern-looking guy with the black hair and moustache, which is natural since his mother is originally from Lebanon. See more...
The Exorcist (1973)
Directed by William Friedkin, starring Ellen Burstyn, Jason Miller, Linda Blair, Max von Sydow (add more)
The Exorcist mistakes
Continuity: When Sharon is taking a walk with the priest Damien, she throws her cigarette to the floor, but in the next shot it's back in her mouth again.
Continuity: When Father Karras visits his mother, he places his collar edge-wise on the shelf. In the next shot the collar is lying down at a different angle.
The Exorcist trivia
In the scene where Regan's mother is supernaturally blasted away from the bedside, she is being yanked by the crew by a length of rope. After dozens of takes director William Friedkin was still unhappy with the look of the shot and ordered the crew to haul her more fiercely. The scream in the shot that made the cut was of genuine pain and required no dubbing for effect.
The green vomit that Linda Blair vomited was actually green pea soup.
According to writer William Peter Blatty, the shooting of the film was supposed to about 90 days long. It ended up being shot in about 210 days. He states that 'strange and sinister things happened from the very beginning.'
The Exorcist quotes
Chris MacNeil: Would you like some bourbon in that, father?
Father Merrin: Well, my doctor says I shouldn't but thank God my will is weak.
Father Damien Karras: I think it might be helpful if I gave you some background on the different personalities Regan has manifested. So far, I'd say there seem to be three. She's convinced...
Father Merrin: There is only one.
Father Damien Karras: There are no experts. You probably know as much about possession than most priests. Look, your daughter doesn't say she's a demon. She says she's the devil himself. And if you've seen as many psychotics as I have, you'd know it's like saying you're Napoleon Bonaparte.