"It’s the hilarious answer to who wears the pants!" The sixth pairing of Katharine Hepburn and Spencer Tracy is arguably their funniest, with the two playing happily married attorneys whose domestic bliss is spoiled when they wind up squaring off in court over a woman accused of murdering her husband. Terrific, sharp-tongued script by the real-life husband-wife team of Ruth Gordon and Garson Kanin.

Ingrid Bergman’s Oscar-winning performance dominates this Victorian-era thriller, one of the greatest suspense films ever made. After 10 years abroad, Paula Alquist (Bergman) returns with her groom (Charles Boyer) to the house where her aunt was murdered. The unsolved crime haunts her to the edge of madness. Nominated for all the major Oscars, including Best Picture, Actor, Supporting Actress and Screenplay, it remains a timeless touchstone of 1940s cinema.

Lovely Parisian courtesan Marguerite (the smoldering, sensuous Greta Garbo) must choose between the prickly Baron de Varville, who's elevated her from a life of poverty to luxury, and handsome Armand (Robert Taylor), even as her health begins to deteriorate due to tuberculosis. Garbo received an Oscar nomination for Best Actress for her devastating performance.