The Philadelphia Story (1940)

Continuity mistake: In the scene where a drunk Connor visits CK Dexter Haven at his home after Uncle Willie's party, Dexter's pyjamas and dressing gown change from shot to shot. First his pyjama top is done up, then it is open, then done up, then open again.

Revealing mistake: In the scene where Cary Grant punches Jimmy Stewart: Jimmy starts falling back (and you hear the sound effect of the punch) when Cary's fist is a good 1-2 feet from Jimmy's face.

Continuity mistake: Uncle Willy pours a glass just over half way full of vodka. With each shot the amount of vodka in the glass changes.

Jack's Revenge

Trivia: All of the scenes in this movie were shot in only one take and in one scene the technique really shows. When Jimmy Stewart is drunk, he ad-libbed hiccuping while he was talking. Cary Grant, not expecting the comic relief, had to look down at the floor to keep from laughing (you can see him grinning and collecting himself).

Steph_Jared

Trivia: Hepburn wanted Clarke Gable and Spencer Tracy for the male roles, but the studio gave her Cary Grant and Jimmy Stewart instead. (She did get Spencer eventually when requested for Woman of the Year).

Jack's Revenge

Trivia: Katharine Hepburn played this role on broadway, it was written for her. She had Howard Hughes buy her the movie rights so only she could play it at the movies. She didn't want any other actress playing Tracey Lord.

Jack's Revenge

C. K. Dexter Haven: The moon is also a goddess, chaste and virginal.
Tracy Lord: Stop using those foul words.

Sidney Kidd: You hate me, I trust, Miss Imbrie.
Elizabeth Imbrie: No, I-I can't afford to hate anybody. I'm only a photographer.

Elizabeth Imbrie: What's this room? I've forgotten my compass.
Macaulay Connor: I'd say, south-by-southwest parlor-by-living-room.