Masaki Kobayashi made a couple of subversive films in the 1960's that present a very dark view of Samurai culture. These films [1][2] are excellent. [1] in particular is exquisite (and tied for the Jury Special Prize at Cannes in 1963).

[1] http://www.imdb.com/title/tt0056058 [2] http://www.imdb.com/title/tt0061847