Rebirth has to do with Vampire, Warriors of tao (only 4 vol. long) is about human gladiators that have these super power type things.  Hope that helps. "Don't doubt the darkness, it can be your enemy as well as your friend."

These are some good shows Karas Blood The last vampireBerserkFate Stay NiteXHellsingMy- Hime Trinity Blood Give your definition of sci-fi and if its machines and stuffthere isAppleseed 1 and 2GunswordVexilleGhost in the Shell (GITS for short) The series and the moviesThe path to conquest leaves nothing else to be desired!!!!

Dragon Knights is pretty good... it is about these 3 guys that have to fight some aliens to save the world... the aliens aren't grostesque looking but more mecha looking & from another planet or dimension...I've only read the first 2 manga and not exactly sure how many volumes there are because I got them used.Dewa Mata,Niji-Hana  OTAKU NINJA"If you listen to the world, you'll hear all kinds of false claims about morality. But the gospel offers an unchanging standard of truth."

trigun, trigun maximum, cowboy bebop, bleach, hellsing, gits.

just got done with reading star trek the manga i and got to say it is one of the best that i have read and along time .