Corrected entry: When Annie goes to her car to pick up her boyfriend Paul the car is locked. she gets her keys and she then opens the car door without unlocking it.
Corrected entry: There's no way Annie could have locked herself in the laundry room considering the lock is on the outside of the door.
Correction: It's a figure of speech when one says 'I/you locked myself/yourself in/out'. She was alone, nobody knew that Michael was skulking around, and she got locked in the laundry room. Anyone would say they locked themselves in.
That's pure opinion, not a correction.
In this scene, you can literally see her turn the lock knob which is above the handle before she tries to get out.
Correction: It's not a figure of speech since the door magically locked itself because the wind blew it shut. She tried to open it and it wouldn't open because the lock is on the outside. Why do you think she was trying to get out the window?
The point is she didn't literally lock herself in - she was locked in. Personally I think it's a minor semantic difference - she may well just think she did something wrong that led to the door locking itself. Regardless it's a standard turn of phrase, if technically inaccurate.
Corrected entry: When Laurie is in the closet she stabs Michael with the hanger and leaves it up there. When they show all the locations at the end of the movie, in the shot of the living room look near the floor up close - you can see part of the hanger there, even though it was left upstairs.
Correction: She stabs with the hanger, he drops the knife in which she proceeds to stab him in the midsection. Once he was shot by doctor Loomis and disappeared, the end of the movie begins prior to the credits and we see the knife lying on the floor next to the knitting basket.
Corrected entry: Michael was locked up for 15 years, so how does he even know where Laurie lives? Let alone know what she looks like or that the Strodes adopted her. The nurse states in part 2 that those records are sealed by the state.
Correction: When this film was made, the idea that Laurie was Michael's sister wasn't part of the plot yet. Hence, no mistake here. As far as this movie is concerned, Michael is merely stalking random babysitters. If anything, it's a mistake for the sequel that introduced this plot element.
Corrected entry: Where did Michael get the white sheet? I doubt he took the time to look for one and cut eye holes in it.
Correction: He'd been stalking around that house ever since Annie started babysitting, so he had plenty of time to learn where everything was. He might have even taken one out of the laundry room since it was in a separate building away from the main house. After he killed Bob, we're not given any indication how long it was before he went after Lynda, so he may have taken one from a linen closet in the house. It's doesn't require much a stretch to the imagination that he'd find a sheet in a house and use it to simulate a ghost, especially since it's Halloween night.
Corrected entry: Tommy accidentally says Laurie's line, "There's nobody out there." (00:55:40)
Correction: Tommy never says "There's nobody out there". He's screaming a lot, but he's saying "The boogeyman's outside!".
Corrected entry: There is a scene involving Michael Myers breaking the closet in order to get to Laurie, then why near the end of the film does it show you the closet in tip-top condition?
Correction: The closet shown at the end of the film is the one at Annie's house, not the Doyle residence.
The ending of the film where Michaels breaks through the closet door is indeed at the Doyle residence. The Wallace house is across the street.
Corrected entry: Michael Myers escapes from prison when he is 21. He is able to drive a car even though he has been incarcerated since childhood. Where did he learn to flawlessly drive a car during those years?
Correction: Loomis actually remarks in the film that someone must have taught him (probably the nurse who let him escape). This could be the explanation.
Corrected entry: When Loomis shoots Michael and he falls over the balcony, you can see that he hopped over it and did not just fall. (01:26:50)
Correction: Actually he didn't "hop." You don't even have to look closely, on the reversal shot, he just walks straight off the balcony. There must have been a plank that he walked off, in order that he didn't need to jump.
Corrected entry: When Annie is taking her clothes off, her underwear is a solid colour, but in the laundry room it is polka-dotted.
Correction: If you look really carefully, especially on the DVD version, her underwear IS polka-dotted. It is hard to tell unless you look.
Corrected entry: At the very beginning, Michael Myers' sister and her boyfriend "go upstairs." Michael then sneaks around the house, picks up a knife, and follows them. As he is about to go upstairs, his sister's boyfriend leaves. He then proceeds upstairs, and finds his sister nude. The actual time elapsed from proposition to his exit is about one minute and fifty seconds. Is this really enough time to go upstairs, get undressed, go about your business, and get dressed again? (00:03:10 - 00:04:35)
Correction: When in the living room, Michael waits about 20 minutes as the clocks jump from 9:40 to striking 10. That's enough time for a quickie and for the boyfriend to leave before the parents suspect he came by.
Correction: When Annie opens the car door without unlocking it is because Michael is already in the car. She even acknowledges the strangeness of the event by making an odd face.