Continuity mistake: After Harry Zidler first sees Christian and Satine kissing, when they stop kissing, Satine's lipstick switches from being smeared to perfectly done and bright red when she walks and when Zidler is talking to her about having to end the infatuation.
Visible crew/equipment: When the sheriff's daughter, Stacie, visits Pootie at the farm, she jumps and pushes him through a window. In the next shot you see him falling into the house, and you can clearly see a pad on his back.
Continuity mistake: Nellie is called into Captain Brackett's office one day. Later, one of the girls asks her "What did the old man want this morning?" However, the scene at night between Billis and Cable shows that a whole day and night must have passed in between these two scenes. Therefore the nurse should have asked "What did the old man want yesterday?"
Continuity mistake: Towards the end of the movie during the play, Kelly goes backstage during intermission, and her hairstyle and color has changed. (According to DVD commentary, it was a pick-up scene and she had already started filming Spider-Man. That's why her hair was now red. Still a mistake, but there's the explanation.)
Continuity mistake: In the childhood oven scene, there is a shot of the mother peeling steamed tomatoes, the shot of the tomato she throws at Hedwig shows fresh tomatoes, then the tomato looks steamed in the oven.
Continuity mistake: Although Clara kicks her shoe at the Mouse King's head, when she gets down from the mantelpiece, it is back on her foot with no sign of her having retrieved it.
Factual error: In the movie, the over is shown to be of six balls. In 1896 the British played cricket with a five ball over.
Continuity mistake: In the shot of everyone chanting, "disco ball!" Hermey is seen in the background, but two shots later, Hermey has disappeared. (00:19:00)