I just read the first 3 volumes of Biomega. These were actually the first manga I have ever read. I can't say that all the ones the "kids" are reading appeal to me, but Biomega is an awesome sci-fi horror story that has zombies, awesome art work, and a kick ass grizzly bear.....so, you can't really go wrong there.
Anybody know of any other good horror manga in this vein??