Blooper

After Dr.Weizak finds Johnny's new home and is invited inside, he begins to pull out medication from his bag. Johnny stops him and Dr.Weizak puts the medication on the table and sits down. In the next scene when he stands up again, the medication is gone.

When returning from the amusement park before his accident, they get out of the car and leave the windows rolled down, even though there is the sound of thunder. It starts to rain and when Johnny returns to the car his windows are rolled up.

After John and Sarah make love, they are standing outside the house and John puts his left hand behind Sarah's neck as he pulls her close for a good-bye kiss. As they separate, both hands are at his side.

During the scenes leading up to the car crash, it is raining heavily in some scene cuts and in others not at all.

All the lights on the tanker stay lit even though it completely detaches from the rig.

It makes no sense that John would be severely dehydrated coming out of his coma. Coma patients are kept as healthy as any other patient, and such severe dehydration would be considered malpractice. - Actually, he is not severely dehydrated, he is just thirsty. Which is normal. A glass of water is even available beside him. And the doctor brings it to his lips.

Johnny's parents are in the hospital ready to visit him when he awakes, as if they had been expecting it. People waking from comas often wake in waves, with short periods of consciousness before slipping back into unconsciousness. If the doctors or nurses noticed this, they probably would have anticipated his eventual emergence from the coma, and notified his parents.

Nearing the film's climax, Johnny gets off a bus and walks in front a building bearing a sign reading "Licence Bureau". The scene was filmed in Canada but takes place in the United States, so it should read "License Bureau".

When Stillson presses the red button, it begins to blink on and off, with a synchronized audible tone. The next time you see the button, the tone is still perfectly synchronized with the red light, but it remained so only by speeding up significantly when the button was out of view.

In the fire scene, right after Johnny Smith tells the nurse her daughter is trapped but alive, the camera crane is visible in the window of the Fire Fighter truck that is parked in the driveway.

After seeing Johnny in the clinic, Sarah drives away and stops to cry. Lights and at least one person are reflected in the car door.

When Alma's body is discovered on the gazebo, Bannerman asks if anyone knows who she is, to which Dodd answers that he does, and that she's a waitress at the local cafe. Since Castle Rock is a small town, it seems unlikely that Bannerman wouldn't recognize her in some way, unless he's never eaten at the diner, which seems unlikely.

Johnny's precognitive abilities are selective. He has visions of people's futures when he touches them, but doesn't have any visions when he hugs his father, or (presumably) when he has sex with Sarah.

When Johnny has a vision of Sam as a boy in Poland during the Second World War, he is clearly quite young. Given that Germany invaded Poland in 1939, and the young Sam appears to have been no older than 8-10, in the early 1980s this would make him no older than his early 50s, despite the fact that Sam appears to be well into his 60s or older. This makes his character far too old in the early 1980s.