Again I post about a film and a remake, actually about two films in my recommended title lists that themselves are excellent, and very different, remakes of an earlier film.
These are two Tange Sazen films released on DVD as Sazen and The Secret of the Urn. The first of these two is out of print in Japan and has yet to be released in the U.S. The second is still available on DVD in the U.S.
Both films are highly enjoyable and are different enough from each other to be both worth watching as well as buying.