

Rufus T. Firefly is named president/dictator of bankrupt Freedonia and declares war on neighboring Sylvania over the love of wealthy Mrs. Teasdale.
Acting
Groucho's eyebrow is a separate cast member with its own agent.
Writing
Puns so dense they require a government subsidy to unpack.
Practical Effects
The mirror scene—no CGI, just pure committed lunacy.

Director
Leo McCarey
Trivia, insights & behind the scenes
Released during rising fascism, audiences debated if it mocked Mussolini—Groucho said they weren't political, just 'against everything'.
The mirror scene was improvised after Groucho broke the actual mirror; Harpo copied him perfectly on the first take.