The last one I finished was Shigurui. It was a history of two trainees of a samurai school in 16th century (17th?) Japan. It surprised me a little, action rarely went as I expected. I wouldn't recommend it though, most people would consider it way to horrible to read (some scenes were much more violent than Elfen Lied, Hellsing or Berserk in general). The ending was really sad too... in the end its really hard to tell what is my opinion of this manga, it was sometimes very confusing and difficult to read. I finished also 2 other mangas within last mont: Cage of Eden (very good start and very bad ending that felt totally rushed - very disappointing, the manga had such a great potential - plane crashes on an island full of long extinct animals) and Battle Royale (another violent manga, although I would recommend it, it was very nice, concept similar to the Hunger Games)