Ernst Lubitsch's So This Is Paris (1926)

So This Is Paris, a complex story of love and marriage, is as fizzy and delightful as a glass of the best champagne.  Suzanne Girard (Patsy Ruth Miller) looks across the street and sees a half-naked man dressed as a sheik, as in the novel she had been reading.  This excites and annoys her so she asks her husband Paul (Monte Blue) to go across the street and give the man (Maurice Lalle, played by Andre Beranger) a thrashing.  Paul goes across the street and the door is answered by Maurice's wife Georgette (Lilyan Tashman) who is an old flame of Paul's. Maurice returns Paul's cane and he and Suzanne are taken with each other; at one point they have a fight and Maurice takes a vase of flowers and throws them one at a time at Georgette in mock anger while Paul is asleep, dreaming a Freudian dream of his cane being forced down his throat!  When Paul goes to an artist's ball with Georgette the radio announcement of their winning of a Charleston contest is heard by Suzanne and she rushes off to the ball in disguise, revealing herself to Paul after he flirts with her, as Georgette takes up with another man and Maurice is arrested because the police think he is Paul.

Of course Lubitsch sets this jazz-age story, with its exuberant ball seen as almost orgiastic, in Paris; he was considerably influenced by Chaplin's A Woman of Paris (1923), a unique Chaplin film of love and betrayal.  Lubitsch's film is more of a comedy but, like most good comedy, is ultimately a serious film about love, loyalty and the varieties of human behavior.