Unfaithful (2002) - 3 major mistakes

Continuity: At the beginning the wind is blowing very hard and Richard Gere and his son are having problems getting outside. Two seconds later, when Diane Lane is looking at them through the window, there is no wind.

Continuity: In the scene at Cafe Noir, Constance goes to the restroom to meet Paul. She does not take her purse with her - her hands are empty. However, when she returns from making love in the restroom with Paul, she is carrying her purse.

Factual error: After leaving Paul's apartment the first time Connie is shown running thru Grand Central. She runs into a track tunnel, but the train's destination on the schedule board is displayed in blue, which indicates that the train is a Harlem line train (these headers are color-coded). However in the remainder of the film both Connie and Edward are shown getting off at a station next to the Hudson river which is served by the (of course) Hudson Line, which are displayed with green colored destinations on its schedule board. Long story short she's getting on the wrong train.