Continuity: Watch the scene with the Indians (just as Marty sticks the DeLorean into reverse) and see the differences of how close and far the Indians are from the DeLorean.
Great sites
Quotes
Jennifer: Excuse me, Doc Brown. I brought this message back from the future and, well, now it's erased.
Doc: Of course it's erased.
Jennifer: But what does that mean?
Doc: It means your futures haven't been written yet. No one's has. So make it a good one, the both of you.
Mistakes
In the scene where Marty is driving the black Toyota pickup at the end of the movie, the truck's registration plate is missing - it can be seen when the truck is in the garage at the start of the film. Also the driver's door quarter light (vent window) is open. When we see the inside of the door it is closed. See more...
Trivia
The band playing at the Hill Valley festival is rock band ZZ Top (two guys with long white beards playing guitar, and a drummer), who wrote songs for the film. See more...
Back to the Future Part III (1990)
Directed by Robert Zemeckis, starring Christopher Lloyd, Elizabeth Shue, Lea Thompson, Mary Steenburgen, Michael J. Fox, Thomas F. Wilson (add more)
Back to the Future Part III mistakes
Continuity: When Marty returns to 1985, he goes to his house and gets in his Toyota pick-up. Look closely behind his head when he first gets in the truck, there is no driver-side head rest. But when he picks up Jennifer, when they pull up to the stop sign the head rest is there.
Factual error: In 1885 when Maggie McFly asks Seamus for a word, they walk into the other room and behind them are a few garments hung on pegs on wire hangers. The wire hanger was invented by Albert J. Parkhouse in 1903, eighteen years later.
Back to the Future Part III trivia
When filming the scene where Marty is being hanged from the clock tower, Michael J Fox agreed to really hang from the rope. Whilst filming, Fox held the rope away from his throat with his hand. At one time he wasn't holding the rope and was really being strangled. The film crew didn't realise, they just thought it was really good acting, until he passed out.
The band playing at the Hill Valley festival is rock band ZZ Top (two guys with long white beards playing guitar, and a drummer), who wrote songs for the film.
Director Robert Zemeckis asked for Clint Eastwood's permission to use his name for BTTF 3. Clint Eastwood felt so honored that he said yes.
Back to the Future Part III quotes
Marty McFly: Listen, you got a back door to this place?
Bartender: Yeah, it's in the back.
Doc: Each detonation will be accompanied by a sudden burst of acceleration. Hopefully, we'll hit 88 mph before the needle gets much past 2000.
Marty McFly: Why, what-what happens after it hits 2000?
Doc: The whole boiler explodes.
Marty McFly: Perfect!