Continuity mistake: In the contract signing scene, Violet and her father are close to Wonka's right elbow, but when the shot changes to Veruca and her father's view, they are further away, then close to Wonka again in a later shot.
Revealing mistake: After Lansbury makes her clothes start to move, her nightgown attacks someone and you can notice the strings that make the gown move.
Continuity mistake: When Tevye goes into town before the Sabbath to make his deliveries, a bunch of men and women run up to him complaining about how late he is. Yet as soon as he starts filling the orders and talking there are only men around him. Where did the women go?
Continuity mistake: Polly Browne is in her dressing room with a picture of Tony Brockhurst on her mirror. She starts to sing and picks the picture off the mirror. As we see a close-up in her hands it is a totally different picture of Tony. As she puts it back, the photo has reverted back to the original.