Continuity mistake: When Biff and his goon friends are in Biff's car, as they chase Marty on his borrowed 'skateboard', the car's rearview mirror repeatedly disappears and reappears, and the side mirror changes from round to square repeatedly. (01:06:50)
Back to the Future (1985)
Ending / spoiler
Directed by: Robert Zemeckis
Starring: Christopher Lloyd, Michael J. Fox, Lea Thompson, Crispin Glover, Thomas F. Wilson
Marty successfully sets up his parents and saves his future. Marty's dad triumphs over Biff and becomes popular. Doc is able to return Marty to the future using the lightning that hits the clock tower. At Twin Pines Mall, Doc wears a bulletproof vest to protect himself from the Libyans. In the present day, Marty's dad is a famous writer and Biff works for him, waxing his car. Marty and his girlfriend Jennifer are reuniting when Doc arrives in the time machine. He tells them that they must go 30 years into the future. The car flies up into the air and off into the future. To be continued...
Riley Finn
George McFly: Lou. Give me a milk... Chocolate.
Question: Right when Marty gets back to Doc before he goes back to 1985, he's praising his dad's actions of the night. One line that's bothered me ever since I can remember is "My dad laid out Biff. He's never stood up to Biff in his life." And then the Doc pauses for a second and gets a strange look on his face and says, "Never?" To that, Marty says, "No, why?" and the Doc shrugs it off saying, "Nevermind." What's Doc thinking? The best I can come up with is that he's wondering what effects it'll have on the future, but that's a rough guess. If anyone out there knows, I'd be happy to hear it.
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Chosen answer: I think that is *exactly* what he is thinking. He realizes that by standing up to Biff, George may have irrevocably changed his personal future, and therefore affected Marty's future as well. This is exactly the sort of thing Doc was so eager to prevent by refusing to hear any information about the future.
Phil C.