Mmm, sorry for not posting that much, it's kinda a time shortage and with postage on DCI being really really high somedays.
But hey, when I saw this title...how can I ignore?

Jin-Roh that's with the Human Wolves counter terrorism squad isn't it?
Haven't seen it in quite a while and don't know what kind of feeling your going for, but if your using the dark side of the film, why not use "Harvest" by Opeth (if your going for something Sonne-ish)
Personally, I think Sonne isn't that good, and a bit cold and emotionless, while it tries to be sad and depressing.
Or if you want to go for Rammstein, do you know Mein Hertz Brennt (My Heart Burns)which is very very moody. (And a great concert opener

)
Maybe Hurt by NIN will fitt the mood, dark brooding, not very high tempo, but if you want a higher tempo, Puscifer's "Rev 22:20" is pretty good with a always good Maynard James Keenan and Haunting female vocals.