State Fair (1945)

Continuity mistake: When Dana Andrews and Jeane Craine are on the roller coaster, as it goes down the first dip, she stand up and he yells at her to sit down, but his mouth never moves. Also, the positions of the riders change from scene to scene.

Margy Frake: Speaking of affairs, Eleanor's on the phone.
Wayne Frake: Christmas, why didn't you say so.