Continuity mistake: When the protagonist of the first episode is shown, he's on the phone talking to his lover, alone in the middle of a room. The cable of his phone though comes always from the same direction even when supposedly he is in different, opposite, spots inside the same room. (00:02:50)
Continuity mistake: When Daffy is clawed by the bear, he loses his hat in the process. But when we Daffy running in the next shot, the hat is back on his head again.
Continuity mistake: When Sammy Davis Jr. is shooting up the casino, the glass rectangles for the lights on either side of all the wine bottles have machine gun bullet holes in all of them before he shoots.
Continuity mistake: After the opening credits, when it cuts to the overhead shot of Shannon sitting on the ground, he has a newspaper covering his head with its front page facing up. In the next shot, the newspaper over Shannon's head has a different front page. (00:06:00)
Continuity mistake: When the gang make a second visit to the waste ground to test the go kart's new engine, Patchy is wearing a light coloured skirt, a button through front jumper and shoes. She is also carrying a small bag. In the next shot she is wearing a different skirt with pockets on the front, a different jumper with no buttons on and boots, and the bag she was carrying has also gone. In the last shot of this scene she is back to the clothes she was wearing at the start. (00:19:35 - 00:21:40)
Factual error: At the start of the excommunication scene, the monks are chanting Dies Irae, a thirteenth century Catholic poem, but St. Thomas Becket died in 1170, almost a century before the poem was written.
Continuity mistake: Rex Harrison is the first to buy the yellow car, but he asks for three changes, the first is to move the intercom phone to the left, but when George C Scott buys the car, the phone is on the right side, not the left.
Visible crew/equipment: The shadow of a camera and cameraman are revealed on the left side while the President (Frederic March) is moving from one room to another (door jamb), after learning about Martin Balsam's death. (01:20:00 - 01:21:00)
Visible crew/equipment: The boom mic's shadow is visible on the walls and columns of the squad room as the medical examiner and detective walk through it.
Continuity mistake: The three enter a small cantina and start a fight and fire. The place is huge on the inside, with stairs to a second floor. From the outside it's just a small shack.