Revealing mistakes: During the bath tub scene, there is chunk of dry ice providing the "steam".
Anachronisms: In Bud's basketball game, the free throw lane is twelve feet wide. Even at the college level this width did not appear until 1957.
Continuity: At the film's climax, when Hazel asks Deanie if she still loves Bud, you can see to the right of the frame that Deanie is wearing her hat. However, when it cuts immediately to a close-up of Deanie, she is not wearing the hat.