Visible crew/equipment: While the winding road up the "bump" is being built, Ram is on the radio updating on the Legion's movements, and he says, "They're moving up hill 49, half a mile from our road." At the very start of the next shot when it cuts to Magda, Marcus, and Asher at the jeep, we can see the film crew's clapperboard in front of Kirk Douglas, as it swiftly moves offscreen at the bottom right side of screen. (02:04:10)
Continuity mistake: When Lucy awakens at 4:00 AM she checks on Linus and then puts him to bed. In some shots there's a window over Linus' bed, but in other shots the window has vanished, and there's only a shelf over the bed. (00:23:10)
Visible crew/equipment: As the Batcoper emerges from its hangar, multiple crew and equipment are reflected in the cockpit's glass bubble. (00:04:05)
Continuity mistake: When Blondie abandons Tuco in the desert, watch the rope around Tuco's neck. It changes between shots, sometimes over his left shoulder, and sometimes hanging down in front of him. It is not due to the camera angle. (00:28:27)
Revealing mistake: When the stagecoach driver gets hit with an arrow, it springs up from below into a horizontal position. (00:33:55)
Continuity mistake: Alva 'mistakenly' enters Owen's room. In the side views showing both characters, Robert Redford's hand is on his belly, while shot from the other side his hand rests on the mattress. (00:25:10)
Continuity mistake: When Thomas answers the phone under the chair, there's a cushion with the number 3 written on it visible on the couch that changes position in the next shot when Jane stands in front of the window. (00:47:05 - 00:47:43)
Other mistake: When the Grinch rides his sleigh back to Whoville and returns everything, as the narrator says, "He brought back their pantookas," a pink ornament lands on the Christmas tree, then changes to yellow mid-shot.