One of the Kurosawa films that I have never managed to see before, I was glad to finally watch it.
It's fairly good, but certainly not his best. The two greedy peasants are used far too much for comic relief, which is not very comical or relieving. Toshiro Mifune is good but he rarely gets the full attention of the camera.
This film is also the one generally regarded as the main inspiration for Star Wars. To that, all I can say is... huh? You can certainly pick some elements that the two films share, but none of them are central elements. And perhaps they are no more than you would expect purely by chance.
The Hidden Fortress (IMDB)
The Hidden Fortress (Amazon)