Visible crew/equipment: In the very first scene when the camera pans in to the butcher shop, you can clearly see the shadow of the cameraman on the lift.
Continuity mistake: At the Stardust Ballroom, listen to the first song the dance band is playing on the soundtrack. It skips measures and at one point is hastily spliced to begin again so as to continue because more time is needed in the scene. The MGM DVD copy is incomplete because it is missing the scene in which Clara speaks with her parents after her evening with Marty. The scene is present on the CBS/Fox VHS.
Continuity mistake: When Caterina sits in the chair while talking to Marty's mother, from one angle her hands are to her sides near the arms of the chair, but from another angle they're folded in her lap.
Continuity mistake: In the first scene at the butcher shop, from one angle Marty has finished cutting the meat and his arms are down. But when it cuts to another angle, he's still cutting the meat.
Continuity mistake: Near the end of the movie when Marty is sitting in the living room talking to Ang, in the close up shots his shirt is open, in the far shots his shirt is buttoned up. It goes back and forth between close/far shots. (01:30:00)