Displayed prominently at the head of Marty's bed is a brightly colored magazine named "RQ." This is "Reference Quarterly," of interest only to professional librarians.
|BACK TO THE FUTURE
The date Marty travels back in time to, November 5, is the same date of time travel in Time After Time (1979).
The device originally considered for use as the time travel machine was a refrigerator. Director Robert Zemeckis said in an interview that the idea was scrapped because he and Steven Spielberg did not want children to start climbing into refrigerators and getting trapped inside.
Eric Stoltz was originally cast as Marty McFly, but changed because he didn't act enough like a teenager. When Michael J Fox was cast, his costume was completely revamped.
The "main street" is the same one used in Gremlins (1984).
The theater in 1955 is showing a double bill: "A Boy's Life" (the working title for Steven Spielberg's E.T. (1982)), and "Watch the Skies" (the working title for Spielberg's Close Encounters (1977)).
The device in Doc Brown's lab that Marty plugs his guitar into is labeled "CRM-114", which was the name of the message decoder on the B-52 in Dr. Strangelove (1964) and the serial number of the Jupiter explorer in 2001: A Space Odyssey (1968), both directed by Stanley Kubrick.
Doc Brown's dog is named Einstein. This may be a vague reference to Chitty Chitty Bang Bang (1968), where the inventor of a miracle car owned a dog named Edison.
The mall where Marty McFly meets Dr. Brown for their time travel experiment is called "Twin Pines Mall". Dr. Brown comments that old farmer Peabody used to own all of the land, and he grew pines there. When Marty goes back in time, he runs over and knocks down a pine tree on the Peabody's property. When he comes back to the mall at the end of the film, the sign at the mall identifies the mall as "Lone Pine Mall".
Farmer Peabody's son is named Sherman. Sherman was the name of the little boy time traveler in one segment of Jay Ward's cartoon show, "The Bullwinkle Show" (1961). The dog who owned his time machine was named Mr. Peabody.
The Twin Pines Mall is, in fact, the Puente Hills Mall in the City of Industry, California.
The dialogue where Lorraine says that when she grows up she'll let her kids do anything they want was cut.
Another deleted scene shows Marty peeking in on a class in 1955 and seeing his mother cheating on a test.
The scene where Marty asks if he and Jennifer become "assholes" in the future was reshot for television.
Einstein arrives from the world's first time-travel excursion at 1:21am, and the DeLorean requires 1.21 gigawatts of electricity to travel through time.
The time machine has been through several variations. In the first draft of the screenplay the time machine was a laser device that was housed in a room. At the end of the first draft the device was attached to a refrigerator and taken to an atomic bomb test. In the third draft of the film the time machine was a DeLorean, but in order to send Marty back to the future the vehicle had to drive the DeLorean into an an atomic bomb test.
The radio in Marty's room plays "Back in Time", by Huey Lewis and the News, who wrote and performed some songs for the film. Also, a poster for their "Sports" album is visible on the wall of Marty's bedroom when Doc calls and wakes him.
Huey Lewis is seen as the high-school band judge.
The "Mr. Fusion Home Energy Converter", which is sitting on the DeLorean when Doc returns from the future, is made from (among other things) a Krups coffee grinder.
The script never called for Marty to repeatedly bang his head on the gull-wing door of the DeLorean, this was improvised during filming as the door mechanism became faulty.
The school that served as Hill Valley High was Whittier High School in Whittier, California just outside of Los Angeles. It's Richard Nixon's alma mater.