Continuity mistake: The driver of a carriage is racing along a road during a rain storm. In long shot, it is pouring buckets & buckets of water. Close-up of the driver & it is a light rain. Back to long shot, buckets again. Close-up, light rain.
Continuity mistake: In the scene where Ka and Bee jump over the "wall" towards the end after attaching the bomb to the boat, they have nothing on their backs; but when they jump into the water, the 'holder' of the bomb is seen on their backs again and the woman takes it off then.
Revealing mistake: Near the beginning, Megalon steps out from behind a mountain. It's obvious the "mountain" is a cardboard cutout.
Continuity mistake: During one of the pool scenes, balls disappear and change position between cuts.
Other mistake: The objective of the band is a cache of gold hidden some years ago in the firebox of a wrecked locomotive in the wilds of Northern Mexico. When they finally dig the firebox door out and open it, the strongbox is sitting inside a completely clean firebox, with nary a cinder, ash, or chunk of burned wood in sight. If the loco and cars had been abandoned after the derailment, there would still have been residue in the firebox.
Continuity mistake: When the Wadsworth ladies drive up to Ann's house, Alba is looking out the left rear window of the car. The next quick shot shows Alba on the right side of the car.
Continuity mistake: As Charlie Brown, Patty, and Marcie are talking, the grandfather clock strikes four. Trouble is the pendulum is stuck in place, first on one side, then the other. It doesn't swing.
Continuity mistake: When Shaft arrives in Addis Ababa, the first close-up on Richard Roundtree shows a man with a hat behind him. No men with hats are behind him in the opening shot of the plane ladder, nor the following. (00:31:05)
Continuity mistake: As the two gorillas watch the approaching humans, one gorilla raises the telescope, then after the angle change, raises it again.
Continuity mistake: At the gas station, Arletty looks at the attendant discharging his gun in the nearby trees. In the next shots, she is holding her bag randomly with or without the shoulder strap up. (00:05:10)
Continuity mistake: When Ray and Alex incapacitate the last of the 4 cops, he flips on the ground wearing his hat. When they approach him to finish him off, his hat is at distance. (00:10:00)
Continuity mistake: When Linus and Lucy are talking to Snoopy he's got a shopping cart stuck on his right leg. Then, when he's getting on the bus it's suddenly on his left leg.
Continuity mistake: For the infamous closing scene, a van of drug-runners fire a double-barrelled 12-gauge shotgun straight into the windscreen of Officer Wintergreen's Electra Glide motorcycle, killing him. In the full front view, the gunfire virtually explodes the windscreen, shattering it on all sides all the way to the frame. Camera cuts to a side view and we see Wintergreen topple off as the motorcycle keeps traveling down the road. In this profile shot, the windscreen is no longer exploded, but now has a neat 4-inch hole in it.
Continuity mistake: When Webster breaks into his first house, he has his briefcase open, so he can get at the items he needs, but before he leaves, he picks up the torch that is sitting on his closed briefcase - he never closed his briefcase; it was open all the time.
Continuity mistake: During the opening credits, the marching band pass the Queen Victoria statue in Windsor twice on their way to the castle.
Factual error: James Caan plays a US Navy Boatswain (Bo'sun) Mate. His rank insignia of BM 1st Class should be worn on the right sleeve, but he has it on the left.
Revealing mistake: When The Kid sits next to Dillon at the Bruins game, there are two older women in the background looking directly at the camera and pointing at it, having just noticed that they are being filmed. (01:33:10)
Audio problem: When the king's army officers are talking, the one who criticizes his adviser's mouth doesn't match with what he's saying.
Other mistake: Throughout the whole scene when Black Caesar is wounded by the Irish hitman several passers-by can be seen looking directly into the camera, and in many shots people are crowded together on the sidewalk watching the filming. Conversely, the hitman fires a big and loud revolver in the middle of a crossing with dozens of people and cars in close quarters, and nobody bats an eyelid. (00:03:00)
Continuity mistake: After spotting her dream house Susan runs to the door. As she approaches the house it's not the same building she spotted from the car. (01:23:50)