Team Medical Dragon ~ awesome doctor does awesome things and i have no idea why i like this so much.
Vagabond ~ another classic, that everyone should read, and its still ongoing.
Dorohedoro ~ no way to explain but more then a worth while read.
berserk ~ yes i know, but its still fucking awesome.
Angel Densetsu~ from the guy who is currently doing claymore, it's a comedy about an evil looking kid who is hated and makes friends ect, hilarious and more then likely my favorite manga of all time.
Family Compo a family of cross dressers, comedy, and drawn in an late 80's early 90's style.
History's Strongest Disciple Kenichi ~ the cloest thing i read compared to the ugly top 3. worth it.
Immortal Regis ~ korean manga about a a boy who suddenly dies and a girl brings him back to life as a zombie and then brought to the magicial world where he is hated for being the only undead who might destroy them all.
Bio-Meat: Nectar ~ another manga from the 90's or 80's where in the future they make these animals who eat anything and everything including rubber and trash becuase of the food supply running lowand everyone starving, which also reproduceat an ungodly speed, afew get loose and nearly destroy the world ...
all of these are mainly gore/fighting/mature titles.