Birth of a Nation. Citizen Kane. Star Wars.
To that list of films that revolutionized the movies I would also add Pulp Fiction, Quentin Tarantino's masterwork from 1994. As the first three films were not so much unique as influential, they changed how movies were made. Pulp Fiction brought independent films to the forefront and inspired countless retreads with its witty, existential, and massive dialogue combined with harsh violence and the tweeking of the plot structure. Aside from what it did for the movies, it is a great movie within itself and one that is just plain fun to watch and contains probably the best performances from John Travolta, Samuel L. Jackson, Uma Thurman, Ving Rhames, and Bruce Willis. The brilliance of the plotting is in making it episodic, so the film actually feels like three short films and therefore the length doesn't become off-putting. Though I haven't seen it in awhile, I was surprised how much of the dialogue and plotting I remembered, and then I thought that it must be because of how carefully constructed the film is by Tarantino. Every shot, every set, every word, and every actor's mannerism is carefully thought through and presented and the result is a film that did no less than shake the world.