jakandratchet: Here's my list of favorites
1. Harakiri (Seppuku)
kai2: Hara-Kiri is a great movie... but hard to watch.
There is the original and there is the modern remake. The first one was excellent. The modern is good as well.
Did anybody mention Kagemusha, by Kurosawa Akira. Historical and one of the very best ever. Eventually he might go and make Ran, Kurosawa pace (the value of silence) combined with a explosion of color and powerful images. Inspired on The King Lear. Both movies are excellent.
Rashomon, which earned Kurosawa recognition in the West, based on the short story "In the forest".
Throne of Blood. Based on Macbeth.
Any period story by Kurosawa, really.