Continuity mistake: There is an error in the scene where Dave is drafting behind the Cinzano truck. In the second close up shot of his legs (cranks) pedaling the bike he is in a lower (easier) gear than the previous shot even though he is supposed to be riding significantly faster.
Continuity mistake: The Black Stallion was played by a horse with white markings; it's occasionally possible to see them under the black dye, especially during the desert scenes.
Continuity mistake: When Gonzo is flying in the air holding on the balloons and then is shot down by Doc Hooper and lands on the car, the last two balloons are yellow and pink, but when the car takes off after Gonzo lands on the roof - the two balloons are now both blue.
Continuity mistake: Go to the scene where the crowd is going to Golgaltha, along with the soldiers and Jesus. After they have taken off Jesus' clothes, and have tied him to the cross, they show a close-up of one of Jesus' hands, with a nail on-top, held by a soldier. Look closely - it's his left hand. Then the camera zooms out, and you can see the whole body of Jesus, and the soldier drives the nail into his right hand. Look at his left, and no nail is in it.
Continuity mistake: V.I.N.CENT's pupils are usually round, but when nose to nose with Maximilian, they're square.
Continuity mistake: Before going to bed, Scrooge takes off his slippers and puts them by the side of his bed. But when he is disturbed by the singers, the slippers and the pillows he is resting his head on have disappeared.
Continuity mistake: When Bugs Bunny is reading from the Christmas stories book to Clyde, you can see Clyde is sitting by the fireplace and there is a long red stocking on the right hand side of it. After a quick cut to Bugs reading, we return to Clyde and the long red stocking has disappeared.