Battle Royale was also a good adaptation, among the few and far between. Perhaps all the manga adaptations I may be referring to all had anime incarnations, and I've been burnt by too many movie adaptations, all with lofty ambitions, but fall face first on execution. I don't mind when they take a few liberties, hell, the manga to anime transitions get plenty of liberties too (Akira, Ghost In The Shell, Bokurano Ours etc), but that's another story for the anime thread. Shinobi Heart Under Blade was altered from the Iga/Koga stories and the manga and anime that inspired them, but I really liked that as a standalone film. Ryuhei Kitamura took the Mamoru Oshii approach when making the Azumi movies and took a lot of the lightheartedness of the original manga and turned it into a dark tragic ninja movie, and I thought the result was for the better. And I'll always use the Rurouni Kenshin trilogy as the standard for this ilk as it successfully captures everything that made the source material special and translates it to live action intact. I don't know, maybe I've seen too many terrible anime/manga live adaptations from both sides of the Pacific.