A Nightmare on Elm Street (1984) - 62 mistakes
Directed by Wes Craven, starring Heather Langenkamp, Robert Englund, Johnny Depp, Charles Fleischer
Visible crew/equipment: This is during the part where the girl dies in the bedroom with her boyfriend (where she gets dragged up along the roof). Just before, when you see the marks made by Freddy's glove, and her hands come up to show her pain, she clearly grabs a chunk of the thin latex pad (best viewed in slo-mo).
Visible crew/equipment: When Nancy's mother is pulled through the door window, a tape marker can be seen on the blue door, above the door handle. Submitted by Hamster
Revealing: Near the beginning, during Tina's first dream, Tina gets cornered in front of one of the furnaces. She steps forward and Freddy jumps out from behind her and scares her. When she steps forward, Freddy (who is trying to lean down out of the shot) is seen stepping sideways to position himself to scare Tina.
Continuity: When Krueger smashes his arms out the front door window, large pieces of glass are still hanging in the window, but in the next shot, as he pulls Nancy's mother through, all the glass has disappeared. Submitted by Hamster
Visible crew/equipment: Right at the end of the film, when Nancy's mother is pulled through the front door window by Freddy, you can easily tell it's a dummy! Submitted by Hamster
Revealing: When Nancy is running upstairs, and struggling in the goop holes, we see a shot of Freddy smash his arm through the small door window. If you play in slow-motion, you can see a large pre-made crack in the window to make it easier for him to smash, which WASN'T there when Nancy ran through... Submitted by Hamster
Continuity: In the boiler room Nancy finds Glenn's bloody headphones. As she raises them up from the ground, between shots, the way she holds them changes. Submitted by Hamster
Continuity: When Nancy is at her bedroom window, she says "OK Krueger, we play in your court" and she is holding her alarm clock. She then pulls down the blind, then when it cuts to inside, Nancy is walking over to her bed but isn't holding her alarm clock. If you look, the clock is on her bedside table, but she doesn't put it there. Submitted by Hamster
Continuity: When Nancy is in the boiler room towards the end of the movie, Freddy suddenly jumps out at her and scares her. In this shot Freddy is wearing his hat. Earlier in the movie Nancy takes the hat from in the movie. After the shot where Freddy jumps out at her with his hat on, the next scene is showed chasing her down a stair case without his hat.

