Monty Python and the Holy Grail (1975)

Monty Python and the Holy Grail (1975) redefines medieval parody with its absurdist humor and shoestring budget of just £229,000. Grossing over $5M worldwide—a return of more than 20 times its cost—the film holds a 97% Rotten Tomatoes score and launched the Tony-winning musical Spamalot. Its legacy as a cult classic endures, with fans still quoting lines decades later.