When Marty returned to 1985, Red was on a park bench that had the logo for California Raisins. The California Raisin Board paid the producers $50,000 for this product placement. However, since it was so dark and dirty, and since Red was covering up most of the logo, half their money was refunded. See more...
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Back to the Future (1985) - 185 mistakes
Visible crew/equipment: In the scene in the beginning where Marty meets up with Doc for the first time, Doc shows Marty how the DeLorean works with the remote control with Einstein in the car. In the shot that switches to see Doc put the car in reverse on the remote control, you can clearly see a crew member manually steering the car in a dog costume (You can even see his hands turning the steering wheel).
Continuity: When Marty is at the "Start" line waiting for the alarm clock to ring, he moves up his return time and the engine stalls out. Next we see Marty turning an ignition key with several other keys on a chain like the ones used on ceiling fans with the little balls and a plastic fob with the paper insert that reads 555-1138 Out-A-Time on it. After Marty arrives back In 1985 in town square, he pauses and gets out for a moment. While returning the the car he puts the DeLorean in drive and again the car stalls out. Again we see Marty restarting the DeLorean, we see a different set of keys. The key mysteriously changed in the time travel to an after market type with a thin wire ring on it, no key fob and the other keys are missing.
Revealing: When Marty crosses the park in front of the court house and the camera pans around following Marty while showing the town, watch one of the buildings in the middle background. Part of the building is grey and has 2 windows and is supposed to have a slanted roof, but if you watch closely, it appears that building is in fact only a wall with nothing behind it.
Continuity: As the Peabodys try to determine what crashed into their barn, the DeLorean's left indicator flashes throughout. When the family is onscreen, the barn's interior goes completely dark between flashes - whereas there should be illumination from the headlights as well. Compared to a later point in time where Marty opens the barn door to get shot at, it's not hard to notice how bright the headlights are.
Continuity: When Biff and gang are chasing Marty on the skateboard, they eventually crash into the rear of a manure-hauling dump truck. When the car swerves left in an attempt to miss it, it will obviously pull somewhat to the left. In the shot just before impact, you can see that just the rear half of the car should impact the truck, but in the next shot the car rests perfectly centered behind the dumps open load.
Continuity: At Twin Pines Mall, when Marty is recording Doc Brown, Marty is raising the video camera to record Doc Brown saying, "No, no, no, this sucker's electrical," but when this piece of film is played back in the Doc's garage in 1955 it appears as if Marty was already recording when the Doc starts speaking.