The changes wrought through time by Marty’s antics are one of the big problems the movie presents as drama – if his father and mother don’t get together, he will vanish. But there’s more.
At the beginning of the film, Doc Brown and Marty experiment with the DeLorean at Twin Pines Mall. When Marty goes back in time, he crashes through one of two pines at the edge of the farming property, and then all the way at the end of the film the name of the mall has been changed to Lone Pine Mall. It’s hard to catch if you aren’t paying attention, but an incredible detail nonetheless.
The Mayor in Disguise?
Near the end of the first film, when Marty finally gets back to his time and races off to try and save Doc from his gruesome fate, a homeless man Marty refers to as “Red” yells at him, complaining about drunk drivers.
The mayor of Hill Valley back in 1955 was also named Red, and while many think this was intentional, Michael J. Fox, Marty's actor, made the line up on the spot. While it's certainly in-tune with the rest of the movie, the filmmakers have neither confirmed nor denied if the characters are one and the same.
Almost Didn't Get Made
It wasn't a smooth ride for this famous film, and though the movies are now pretty much universally-loved, the pitch for the movie was rejected a staggering forty times before Universal finally purchased it.
One of the main reasons it was rejected was because of the incest detail. Disney in particular brought up the fact that they didn't like Marty being kissed by his own mother in a romantic way, though Lorraine was unaware of the relation, and immediately after kissing him she is creeped out in a manner she doesn't fully understand.
Greasing the Wheels
As Doc Brown and Marty are working feverishly to pull off their plan to send Marty back to when he came from, a police officer wanders up and begins to wonder if they have the right permits for their “weather experiment.”
As Marty works on getting all of his details of the night right – the plan to endear Lorraine to George, fighting off Biff, and then getting back in time to help Doc – Doc can be seen taking something out of his wallet, after which the officer has no problems. Permits? Not exactly. Instead, a little bit of cold hard cash keeps justice moving.
Acting for...Five
Marty McFly is Michael J. Fox's most famous role. Though he's done plenty more, he will always be remembered, and rightfully so, for playing Marty, but even within the "Back to the Future" trilogy he plays a couple of roles.
Not only does he play himself as well as his older self in 2015, but he also portrayed both of his children — Marty Jr. and Marlene. In addition, he played his own ancestor Seamus in 1885, and finally, he portrayed his own great-grandfather, Seamus's son, William, for a picture in "Part III", and also voiced him in the Telltale game based on the series.