Continuity mistake: In the scene on the sidewalk where Bev is pretending Faye is her mom (and she's practicing to tell her mom that she's pregnant) the same people walk by several times. I don't think there was a single shot-reverse-shot sequence that had the right people walking by at the right time. You saw the same couple, for example, walk by at least four different times.
Continuity mistake: One of the last scenes of the movie, when Karen Silkwood is driving away from Dru they show her sitting in the car waving at him and the rearview mirror is clearly visible. Then she starts driving away, and the rearview mirror is gone. Then as she drives off, you can see the mirror has been replaced.
Continuity mistake: The white Mercedes has a sunroof in some shots, and not in others.
Factual error: In the game at Pittsburgh, when Ruth hits three home runs, the first two were hit off Guy Bush. When he comes to bat the last time, Guy Bush is still pitching. This was not the case. Red Lucas was the pitcher, and he gave up Ruth's last home run.
Continuity mistake: In the B&W newsclip scenes, Mr. Hopkins is wearing a prosthesis to make his nose longer, a la Nixon. This appliance was apparently jettisoned for the main shoot.
Continuity mistake: Jesus is shown from behind on the cross with large gashes on the backs of his legs. He was flogged across the shoulders and back only at the pillar.
Visible crew/equipment: When the slaves roll the flaming ball down the hill, we see it strike several Roman soldiers. Look closely, they are actually stuntmen dressed in asbestos suits.
Continuity mistake: In the hospital scene, Audrey's mother is sitting down with the bed table to her left. We see her start to rise, but when the shot cuts, she's suddenly standing at the bedside on the other side of the table, with no time transition included for her to get there naturally. (01:57:30)
Continuity mistake: While discussing her bodily changes during adolescence, Marji says her left foot became enormous, but the scene shows her right foot growing larger.
Factual error: In the scene where nickels fall on newspapers announcing that Roosevelt beat Hoover, at least one of them appears to be a Jefferson. The election occurred in 1932. The first Jefferson nickel was minted in 1938.
Factual error: The final episode of "The Lucy-Desi Comedy Hour" when Lucy meets Ernie Kovacs, marks the finality for Lucy and Ricky Ricardo, and Fred and Ethel Mertz. By this time the shows weren't filmed before a live audience the way it's depicted in the movie. The producers of the show abandoned the live audience earlier than the final shows.
Continuity mistake: Near the end, when the hitman walks out of the diner, the camera focuses on the car in the parking lot, cuts back to the hitman, then cuts back to the car. The problem is the shadows in the first shot of the car are about half a meter long, but a few seconds later they are two meters long. Obviously both takes of the car were taken hours apart.