His Girl Friday. I don’t usually like to assign movies ratings, but this was an instant 5-star film for me. The structure is perfect, the dialogue is hilarious, the energy is constantly high, and the deeper meaning present without being overbearing. I’ll go so far as to say I vastly prefer it to The Philadelphia Story, though Jimmy Stewart and Katharine Hepburn make that film.
EDIT: Could we please use HTML instead of markdown?