Continuity: In the scene where George goes into the cafe to tell Lorraine he is her density/destiny, the people sitting at the bar keep changing with different shots. Best example is just after George refers to his "density" - in the background there's a brunette in a blue jumper at the bar. A blonde woman and a short-haired guy then sit on her left, but then disappear in the shot of Marty sitting at the bar - on the brunette's left there's now another brunette in a pink jumper with a different guy. The brunette's got shorter hair too. In the very next shot the blonde's back with no sign of Marty. (Time)

Visible crew/equipment: When Biff is chasing Marty on the skateboard, in the shot right before Marty crashes into the lady with all the papers, there is a side shot of Biff's car and in the reflection of the car, you can see a nice picture of an orange camera truck, following along with the action.

Continuity: In 1955, when Doctor Brown is watching the video of himself, he sees himself saying that the Libyans are coming. You can hear a significant pause between "They found me" and "I don't know how but they found me." But in the beginning of the film he says the entire phrase without any pauses.

Continuity: 1955 Skateboard Chase Scene around Town square. After Marty falls over the couple, a shot of Biff's car shows all the passengers standing up, yet in the very next frame everyone is sat down. (Time)

Other: Beginning of film. Twin Pines Mall. When Marty escapes the Libyans at the Twin Pines Mall, hits 88mph and ends up in Old Man Peabody's barn, note how the car drives in through a large opening in the barn before crashing, however, the cut to the inside of the barn shows no form of entry other than the closed doors the family are entering. In addition the inside of the barn is very small compared to the outside view. (Time)

Continuity: 1955 skateboard chase scene around town square. Note in this scene a metal device has been added between the kicktail and the back truck of the skateboard to create the sparks, then disappears and reappears thoughout the whole chase scene. (Time)

Continuity: 1955 Skateboard Chase Scene around Town square. Thoughout the whole chase scene two visible different stunt drivers are used to drive the two different models of Biffs' Ford. (Time)

Continuity: In one shot of Einstein strapped in the DeLorean, if you look closely in between the steering wheel, you can see that the yellow time circuits on the bottom read the month as "10" rather than "Oct." (Time)

Continuity: As Marty drives the DeLorean towards the clock tower, if you look carefully you can see that he drives past the 'Bluebird Motel' billboard at least 3 times (which is where he started from) and drives past that small building with the slanted grey roof in the square about 4 times.

Continuity: While Doc is waiting for Marty to get back from the dance, he looks at the watch on his left hand, his pocket watch, and the watch on his right hand. When he looks at the watch on his right hand, he is wearing it on the inside of his wrist. Then, as he is running around the car, he has no watch on his right wrist at all. Moments later, as he is pointing down the street, it is on the outside of his right wrist. When they are checking the alarm clock, he holds it in front of the alarm clock to check the time, and the watch is still on the outside of his right wrist. [Watches can rotate easily when the arm is moved a lot, as in running. That could explain part of this.] (Time)

Continuity: Marty has a brainwave about how to generate the power needed to get back to 1985, and shows Doc the flyer he was given, which Jennifer had written "I love you" on the back of, with her number. Problem is that after Doc grabs the flyer, we can see the back of it, and it's totally blank. (Time) Submitted by Jon Sandys

Continuity: While being chased by the terrorists Marty passes the J C Penny's store, drives a little farther and passes it again. Just before the Libyans aim their rocket at Marty, their van changes from about 100 yards from the store to right in front of it in less than a second.

Continuity: When Marty's been thrown back by the amp, the papers on top of him change between the first and second shot. Precisely a Polaroid photo, a poster/map and a vase are missing. Submitted by Sacha

Factual error: When Marty McFly is being chased around the town square by Biff and his buddies in the black convertible, the car starts out as a 1946 Ford. In the shots where the car comes dangerously close to Marty, the front end of the car is a 1947-48 (parking lights on the '46 are rectangular and just to the inside of the headlights; on the 47-48, they are round and BELOW the headlights).

Continuity: At the beginning of the movie after Biff leaves the McFly home. There is a scene where Marty and George are talking. In one shot George has three pens in his pocket, a few seconds later he has two. (Time)

Revealing: When Marty is being chased by the terrorists, there are several shots where you can see Marty's stunt double through the DeLorean's windshield.

Continuity: In the scene where Marty is at the "Start" line waiting for the alarm clock to ring, he moves up his return time and the engine stalls out. Next we see Marty turning an ignition key with several other keys on a chain like the ones used on ceiling fans with the little balls and a plastic fob with the paper insert that reads 555-1138 Out-A-Time on it. After Marty arrives back In 1985 in town square, he pauses and gets out for a moment. While returning the the car he puts the DeLorean in drive and again the car stalls out. Again we see Marty restarting the DeLorean, we see a different set of keys. The key mysteriously changed in the time travel to an after market type with a thin wire ring on it, no key fob and the other keys are missing. (Time)

Visible crew/equipment: White screens used for lighting are reflected on Marty's sun glasses, when he is boosted backwards by the amp. Submitted by Sacha

Continuity: When Marty is playing at the dance the picture on the guitar disappears in some shots.

Visible crew/equipment: At the end of BTTF they all pile into the DeLorean which reverses up to the camera where the matte box and what looks like the top of the cinematographer's head are reflected in the chrome number plate. (Time)