Ugetsu (雨月物語, Ugetsu Monogatari, lit. "Rain-moon tales") is a 1953 Japanese period fantasy film directed by Kenji Mizoguchi starring Masayuki Mori and Machiko Kyō. It is based on the stories "The House in the Thicket" and "The Lust of the White Serpent" from Ueda Akinari's 1776 book Ugetsu Monogatari, combining elements of the jidaigeki (period drama) genre with a ghost story.
The Wikipedia page has a lot of interesting information including what Godzilla represents and the origin of the name.
Seven Samurai (Japanese: 七人の侍, Hepburn: Shichinin no Samurai) is a 1954 Japanese epic samurai action film directed by Akira Kurosawa from a screenplay co-written with Shinobu Hashimoto and Hideo Oguni. Taking place in 1586 in the Sengoku period of Japanese history, it follows the story of a village of desperate farmers who seek to hire samurai to combat bandits who will return after the harvest to steal their crops.
At the time, the film was the most expensive film made in Japan. It took a year to shoot and faced many difficulties. It was the second-highest-grossing domestic film in Japan in 1954. Many reviews compared the film to the Western film genre.