In Back to the Future, when Marty first goes to the mall it is called Twin Pines Mall. When he travels to 1955, he runs over one of Old Man Peabody's pine trees. When he returns to 1985, the mall is called Lone Pine Mall.

Eric Stolz 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' where they back to the future, is the same one used in Gremlins (1986)

One scene only shown in a 1990 TV special was the 1955 Doc investigating his 1985 counterpart's suitcase, discovering a hairdryer and a copy of Playboy.

The dialogue where Lorraine says that when she grows up she'll let her kids do anything they want was cut, but was put in Back to the Future II.

Back to the Future Part II was filmed at the same time as Back to the Future Part III. In the five years since the original was made, Michael J. Fox had forgotten how to ride a skateboard.

Another deleted scene shows Marty peeking in on a class in 1955 and seeing his mother cheating on a test.

When Marty arrives in 2015, he looks in the window of an antique store, where there is a Roger Rabbit doll. Who Framed Roger Rabbit (1988) was also directed by Robert Zemeckis.

The old man who wishes he had bet on the Cubbies is played by Charles Fleischer, who did Roger Rabbit's voice.

Another scene from the 1990 TV special showed Biff fading out in 2015 after stumbling out of the DeLorean and behind some trash cans.

Another cut scene shows Marty discovering the destroyed Hill Valley High School.

The two police officers that take Jennifer to her future home in Back to the Future II are named Reese and Foley, which are the names that Zemeckis and screenwriter Bob Gale use for any police or government agents in the films they have written.

Crispin Glover played George McFly in the original, but was replaced by Jeffrey Weissman in Part II and Part III. There is a rumour that Glover had some emotional/mental problems which caused this.

The Editor of Hill Valley's newspaper in 1885 is "M.R. Gale", a tribute to trilogy screenwriter Bob Gale.

In Back to the Future Part II, Biff watches The Good, the Bad and the Ugly (1966) in the alternite 1985, in which Clint Eastwood's character uses steel plating underneath his poncho. Marty (calling himself "Clint Eastwood") uses the hatch from a stove under his poncho in 1885. The sign at the train crossing in 1985 identifies the location as "Eastwood Ravine".

Director of Photography Dean Cundey plays the photographer who takes Marty and Doc's picture in 1885.

When Marty walks along the railroad tracks and finally reaches the town, he comes to the railway station. Then he walks into the town, while the camera slowly rises up above the station and finally shows Marty at a large distance walking into the town. This scene is shot exactly the same way as the scene in Once Upon a Time in the West (1969), when Jill arrives at the station.

The scene where Marty asks if he and Jennifer become "a**holes" in the future was re-shot for TV.

The newscaster on TV in the opening sequence is Deborah Harmon, who appeared in director Robert Zemeckis' Used Cars (1980).

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.

Steven Spielberg is the driver of the pickup truck that gives Marty a lift to school (Where Marty is skating on the back).

Huey Lewis from Heuy Lewis and the News (who sings the song "Power of Love" for the soundtrack) is the Battle of the Bands auditiion judge that says, "I'm afraid your just too darn loud."

ZZ Top is the band playing at the Town Festival in Back to the Future Part III.

In Back to the Future Marty doesn't think he can take the rejection he might get if he sent his band's tape to a record company. In 1955 his father has the same attitude about his science fiction stories and asking Lorraine to the dance. Even though Marty's cooler than his dad, he still has the same insecurities.

In Back to the Future, Lorriane has tracked Marty down to Doc's lab. Doc says, "Quick! Let's cover the time machine!" In Back to the Future Part III, Clara is at Doc's blacksmith shop and Docs says, "Quick! Cover the DeLorean!"

In Back to the Future and Back to the Future Part III Doc builds elaborate models to illustrate his plans to send Marty back to the present. With both models Doc says, "You'll have to excuse the crudity of this model, I didn't have time to paint it or to build it to scale."

In Back to the Future Part III, Marty is told by both the 1955 Doc and the 1985 Doc (in 1885) that he's "just not thinking 4th dimentionally" (He has a real problem with that).

In Back to the Future it is 10:04 PM when lightning hits the clock tower. In Back to the Future Part III it is 10:04 AM when Doc and Marty are looking at the map of Shonash ravine. (Clock is off to the left)

Also when they are looking at the map, if you look behind Marty, you'll see Clara waiting for someone to pick her up at the station, after Doc said he wouldn't pick her up (She's wearing a purple dress).

In Back to the Future Part III when Marty goes to 1885, the ravine is called Shonash Ravine. It is supposed to be called Clayton Ravine, but Doc saves Clara. When Marty goes back to 1985 it is called Eastwood Ravine.

In Back to the Future in 1955 there is a D. Jones manure hauling truck which Biff runs into. In Back to the Future Part III in 1885 there is a A. Jones manure hauling carriage which Buford Tannen gets knocked into.

In Back to the Future Part III there is a Statler Toyota dealership in 1985. In 1885, there is a Statler horse buggy rental.

In all three movies there is a Texaco in 1955, 1985, & 2015.

In Back to the Future Part II, in 2015 there is a movie called Jaws 19 on the theater's marquee. It is directed by Max Speilberg who is Stephen Speilberg's son.

Michael Jackson is referenced in both Back to the Future Part II and Back to the Future Part III at the Cafe 80's, the posters in Marty's room in the alternate 1985, and Marty doing the moonwalk.

In 1885 the Palace Saloon is on the street corner of Hill & Main street. In 1955 Lou Carruther's Cafe is in the same location. In 1985 there is a arobic exercising place. In the same location in 2015 is the Cafe 80's.

In Back to the Future, the busboy who works at Lou Carruther's cafe in 1955 is named Goldie Wilson. In Back to the Future Part II in 1985 he is mayor of Hill Valley, in 2015 the mayor's name is Goldie Wilson III.

In Back to the Future, the mayor of Hill Valley in 1955 is Red Thomas. He is also the homeless guy towards the end of Back to the Future and in the alternate 1985 in Back to the Future Part II.

The license plate of the DeLorean in Back to the Future reads "OUTATIME." There is a futuristic license on the DeLorean in Parts II and III.