Ichi the killer, Lone wolf and the cub series... you gotta love the japanese gore films... and main maiming equipment in those: Beautiful japanese katana's...
The most gorest was japanise 13 episode series, animated few years old. Pretty realistic. You had everything from beheadings, to side head slashing, guttings and all internal organs detailed way to drawn, that series made Predator look like Sesame Street. But like most Anime's sword action was overshoot and quite amazing... After watching Japanese flicks and series... Highlander, Conan and Rob Roy did lost some appeal.
When it comes sword and sword wound films, japanese make the best...