Seven Samurai is arguably the greatest film from arguably the greatest Japanese director. Akira Kurosawa and his writers created the plot elements of recruiting heroes and starting the film with the hero undertaking a mission unrelated to the actual plot. He used multiple cameras and telephoto lenses to capture the action, which was almost as unusual as his insistence on creating the entire village away from the movie studio to make it more authentic.
Probably the most well known actor in this film is Toshiro Mifune, probably because he made 16 movies with Kurosawa. I suspect he is second only to Godzilla when it comes to recognition from audiences outside of Japan.