Ah, it's cool. They're obscure for a reason, probably. Ever see One Wonderful Sunday? A pretty awesome romance film set in post WWII Japan. Stray Dog's also pretty phenomenal, although less on the obscure side. Ikiru's also a favorite. But for the sake of illustration, it's probably best if everyone sticks to the Samurai theme. Someone should rock a 'Dreams' pic!
An absolute shame man! Seven Samurai's great, but loooong. Definitely check out Dreams. It's recent, visually beautiful, and Martin Scorces plays Van Gogh. There is no way you can lose. Also check out Stray Dog for a Japanese noir classic- it's about Toshiro Mifune (Yojimbo) as a cop who loses his gun and has to track it down in the seedy underbelly of Japan. Ikiru's about a salaryman who finds out he's going to die (of stomach cancer, I believe) so he sets about bettering the world before his death. Kurosawa's Chanbara (sword play films) were the stuff of legend, but I also dug it when he directed contemporary films as well. You're hard pressed to go wrong with his stuff. Also: Rashomon. If you see two Kurosawa flicks, maybe Yojimbo and Rashomon are the two that could capture any audience at any time. Give 'em a shot.