Continuity mistake: When Annie and Laurie leave the hardware store to go to their babysitting jobs it is broad daylight. When they reach the houses apparently just a few blocks away, it is already dark.
Continuity mistake: When the old car blows up both of the dead zombies are gone. (00:21:40)
Visible crew/equipment: There's a scene in which someone goes into a phone booth to make a call. As the phone booth door closes you can see a reflection of the cameraman.
Visible crew/equipment: In the scene where Brody approaches the group of teenagers on their smashed boats, the angle cuts to show Brody approaching seen as if from Cable Junction. At this point, there is a huge mistake. The teenagers' boats are clearly visible in the foreground, the kids have all completely vanished, and you can spot the cameraman standing on the boats quite clearly.
Continuity mistake: After the second rape, on the rock, as Jennifer lays on the rock, her hair changes position between shots.
Continuity mistake: The dressing that is on the evil Dr Leticia Baines's forehead keeps changing. When she is first placed on Grogan's raft, the dressing is soaked with blood. In the next few scenes it just has a small patch of blood in the centre. After she swims to rescue the boy from his canoe, she gets on the raft and the dressing is dry. In the next two close-up shots the dressing is wet (with water) and then it is dry again.
Suggested correction: While the description of the events and the mistake is accurate, it wasn't Dr. Baines that swims out to save the boy. It was Dr. Hoak. You're thinking of the 1995 remake of the film.
Continuity mistake: When Mark dies his body falls to the ground falling forward. After Damien screams and goes over to him his body is now lying across the path.
Revealing mistake: When Katharine Ross pronounces the child dead in the hospital, she pulls a blanket over the child. The kid moves and flutters his eyes.
Continuity mistake: When Gillian escapes from the facility, Hester runs out the door after her and collides with the guard coming from the opposite direction. For a second, they rebound in opposite directions, then it cuts and she falls on top of him (the same direction).
Visible crew/equipment: When Gene is on top of the coaster at the amusement park, you can see a cameraman below filming.
Revealing mistake: In the opening scene, the tomato in the sink starts moving and as it comes up toward the rim, you can see a person's finger as they toss the tomato in, revealing the whole thing is run in reverse.
Revealing mistake: When the neo-nazis burst into Kohler's apartment, they stab him and he slides down with his back against the wall. While Mengele picks up the phone, you can see the 'dead' Kohler blink in the background.