Dubstepforum.com

I remember seeing people ask about getting those demonic-like vocals and wondering about it myself. There are tons of ways to do it, but this is worth a watch if you are interested. (This video has probably been posted a thousand times but people may not know this part is in there)

http://youtu.be/CfCmoEixxro?t=15m8s

The rest of the video is pretty good too.

Peace

(this does interest me)