Lost in Criterion

Apparently Akira Kurosawa and Toshiro Mifune did not end their relationship on the best of terms, but if they had to part ways fighting, they still managed one heck of a film, but then could either ever make a bad film? Red Beard, from 1965, is not only the two greats' final collaboration, but also Kurosawa's finally black and white film. That probably makes it special, too, right?