Revealing mistake: Most of the posed, fake displays in the ape's Museum of Natural History contain real people who are slightly moving if one pays careful attention. Especially noticeable are those posing with objects held in - or above - their hands.
Revealing mistake: When we see the space station from the cockpit of the approaching shuttle, the station does not appear to rotate because the shuttle is rotating at the same speed. OK...except that the station IS still rotating with respect to the sun, which means that the light source and shadows on the station should be moving.
Revealing mistake: After the accident with the German car crashing into the pile of snow in which the Germans were killed, Schaffer first hangs an MP40 on his shoulder and then somehow pulls up a body with only one hand. And with the changing of the grip, (from chest to legs) the 'body' stands on his own feet to give Schaffer the time and opportunity to do it properly. (00:50:10)
Suggested correction: Schaffer uses two hands to pick the body up his left hand grabs the body's right arm and his right hand grabs the body's tunic (under the body's chin).
Revealing mistake: When Barabarella and Pygar are being attacked by the leather guards in the labyrinth, Barbarella tells Pygar to shoot to the right. Pygar, howver, swivels left and shoots, hitting the guard dead on. Since Pygar is blind, he had only her instructions to go on. (00:37:35)
Revealing mistake: Whilst imprisoned by the Burpers, Brother Belcher calls to one of the guards. The guard's supposed to have many missing teeth, but they have just been very obviously blacked to simulate this (a very common film or theatre trick, but usually not this obvious).
Revealing mistake: When Matt and Freya are attacking the compound, at one point he goes outside and throws a "hanky panky" grenade at what looks like a garage door. He throws himself over a hedge and a moment later the grenade explodes. When he is getting up, the "ground" is obviously a cushion covered with fake grass.