JESUS! Goofs in the movie....
When the nurse struggles in the car while Michael is on the roof of the car, we hear the sound of tires screeching. However, it is raining and the road is wet.
While in the company of Tommy Doyle, Laurie places the keys to the Myers' house under the mat at her father's request. Tommy says goodbye until later that night and Laurie starts singing to herself walking down the street. Michael Myers then watches her, breathing heavily but the motions of his chest and shoulders rising and falling do not match the sound.
In the beginning of the movie Michael is six years old. The rest of the movie is enacted 15 years later, so Michael must be 21 years old. In the end credits however, there's a Michael of age six and a Michael of age 23.
When Annie brings Lindsey Wallace over to the Doyle house, she tells Laurie that she will just have to call Ben Tramer "tomorrow." In actuality, Laurie could just talk to Ben at school, as November 1, 1978 was on a Wednesday.
Annie moans about having to babysit at the Wallace's house, and Laurie says she's babysitting at the Doyle's home which is three houses down. Later in the movie the Wallace's house is shown to be across the street from the Doyle's.
The Wallace house has its living room on the left side of the house and yet when anybody enters the house, they go to the right of the door to enter the living room.
When Michael is stalking Tommy at the school there are a few cars parked across the street from where he's headed. Once Michael gets into his car, all of those cars are gone.
The front door knob of the house where Laurie is babysitting is on the right when seen from both sides of the door.
When Michael Myers, as a child, walks through the living room with the knife, the clock above the stove shows 9:25 and the clock on the wall reads 9:40, but just 5-7 seconds later, the clock chimes 10 times.
When Laurie is trapped in the kitchen, she breaks away glass to move the rake. The shards of fake glass are clearly visible. However, when it cuts back to the shot, the shards of glass are gone.
When Annie drops off Laurie at the Doyle house, Laurie walks towards the front door which is a French door in this scene; throughout the rest of the movie the door is solid.
The narrow windows on either side of the front door of the Wallace house are not the same pattern on the inside as they are on the outside.
When Laurie walks to the Myers house to drop off the key, she only has a few blocks to walk. However, when she and Annie drive clear across town to reach the Doyle house, the Myers house is conveniently close by.
When Michael goes to the school and gets in the car to follow Tommy, the passenger side window is no longer smashed from the previous night's attack on the nurse.
When Bob and Lynda get out of the van and go into the house, they clearly leave the passenger's side door open. The next time we see the van, the door is closed.
When Annie comes back after dropping Lindsey off at Tommy Doyle's house, the TV is turned off, although it was left on when Annie and Lindsey went across the street.
When Laurie and Annie are walking down the sidewalk and Laurie sees Michael standing next to a bush, from Laurie's point of view the bush is trimmed and neat, but when Annie walks up to the bush, it's all bushy with leaves sticking out everywhere.
Whenever Laurie, Tommy or Lindsey looks out the window at the Wallace House, there is a pumpkin visible with a candle burning. In all of the shots except two, the jack-o-lantern is a flat-looking thing. The two exception shots show a tall and more narrow/skinny pumpkin.
When Annie is first shown spilling something on her clothes and takes them off to wash them, her panties are a solid color. Later when she is in the laundry room her panties have flower prints on them.
After Doctor Loomis has talked to the Sheriff from a phone on the highway and warned him about Michael, he notices a red pick-up truck and walks towards it to inspect it. We can hear the noise from the train that is coming towards the camera on the left side, shows up and starts to pass. The next shot, is from the opposite side, showing the Doctor and the truck from the front. We still can hear the train passing but there is no train in the background.
Toward the beginning of the movie when Michael is attacking the woman in the car, she steps on the gas turning the car toward some trees. In the next scene when she jumps out of the car, Michael jumps in and drives off. The trees aren't there anymore and he's driving straight on a road.
Laurie's hair changes from curly to straight in almost every scene.
When Michael is watching Annie in the kitchen he knocks down and breaks the plant hanging in front of the door. Later when Laurie approaches the same door there is a plant hanging in front of the door.
As Laurie is walking home from school, a leaf (or some other debris) is briefly seen stuck in her hair. When she turns back, looking towards where Michael was after she bumps into the Sheriff and is startled, the leaf is gone.
Walking home from school, the girls are seen to be traveling along a very dry street, however, when Laurie is left alone, the streets are obviously now wet.
After Lynda says goodbye, Laurie and Annie continue to walk home from classes together and the following scenes show that the takes were combined from different periods of the day. When Laurie sees the Shape peering at them behind the bushes, the Sun is setting behind the houses to their left. In the very next scene when she tries get Annie's attention, the Sun is shining on them from directly above. When Annie rushes to confront the Shape the Sun is still setting but once Annie departs, it shines completely overhead again as Laurie is frightened by Sheriff Brackett.
After Michael Myers kills Bob and watches him die as he hangs on the door, there is a nearby counter top with a flour can full of kitchen utensils and a cutting board. Above it is a wooden cabinet with nothing beside it. However, once Laurie enters the house to look for her friends there is a red container, a box of Quaker Oats, and something shiny and metallic next to the wooden cabinet.
After Judith's boyfriend leaves, young Michael ascends the steps to his sister's bedroom with a kitchen knife in hand. Her clothes are balled up together in a pile on the floor at the top of the landing. After he picks up the clown mask from the ground and puts it on, the pile of clothes are now trailing piece by piece towards Judith's bedroom door and one of the articles, a pink sweater, is now openly lying flat.
While Michael is breaking through the door to get to Laurie, he unlocks and opens the door, then it cuts to Laurie, and when it cuts back he opens the door again.
When Laurie first arrives home from school, she glances out the window and sees Michael standing in her neighbor's yard. It is very windy. But in the next moment, she slams the window shut and the trees are perfectly still.
Crew or equipment visible
When Laurie sees the shape near the bush, cigarette smoke from director John Carpenter's cigarette can be seen floating into view.
While Bob and Lynda are heading up to the bedroom from the living room, Lynda trips on a dolly track and tries to ignore it. [widescreen only]