Corrected entry: Towards the beginning, when Marty returns to 1985 and walks up to Biff's hotel he runs into the town drunk and refers to him as "Red." Red was the mayor in 1955, shown in the first movie when a campaign van is driving around the town square saying "Re-elect Mayor Red Wilson".
Correction: This is not trivia, this is part of the plot.
Correction: The names of the mayors are mixed up in this entry. The 1955 mayor was Red Thomas and the 1985 mayor was Goldie Wilson.
No that's the point. Red Thomas has fallen on very hard times in this alternate timeline 30 years later and has become the town drunk.
Bob Gale said this isn't true, the name was improvised.
Corrected entry: In the scene where Biff gets the sports almanac from "Gramps" Biff in his garage, Gramps gives Biff the sports almanac. Biff looks at it, makes a dumb comment and then gets slapped for it, then tosses it in the backseat. But you'll notice Gramps still has the almanac in his hands and uses the book to show the results of the UCLA game. When Biff is given the book for the second time, it is tossed in the backseat again. (01:08:35)
Correction: Not a mistake. After Biff tosses the book back the first time, it is shown landing on Marty, and we see Gramp's hand as he says "You fool.", signalling that he has reached back for it.
If that's the case then why was it edited with CGI in later releases so the almanac's trajectory appears to land in Old Biff's lap?
Actually the original entry is correct. He throws the book twice: first, he's angry and tosses it, and as stated CGI has been obviously used to make it look as though the book lands in Old Biff's lap, when originally it went in the back seat. The second time he says to old Biff that he'll take a look and casually tosses it into the back seat. That's when it lands next to Marty.
Corrected entry: When Marty goes to the new 1985 and goes into the house he thinks is his, a Dirty Dancing poster can be seen on the girl's bedroom wall. Dirty Dancing was not released until 1987.
Correction: Just watched this scene looking for the Dirty Dancing poster. I see about 4 different Michael Jackson posters, but no Dirty Dancing poster.
Correction: This is a very altered version of 1985, so it doesn't have to conform to the original timestream. For instance, Biff may now be responsible for providing the funding that gets the movie made earlier.
Correction: He actually says "Brett" - the joke being that Brett from the normal 1985 (the town drunk) is exactly the same in the alternate 1985. Hes the only one who hasn't changed, hence the way Marty says his name.