Thought I might bump this thread with a request for some advice from CPuck. I need some good study music and it seems that Metal and well, aggressive music works for me. I tend to listen to a lot of Children of Bodom, Nine Inch Nails(circe The Downward Spiral and The Fragile), Russian Circles, Amon Amarth and Isis.
And for those of you who don't know Russian Circles... they kick ass.
http://www.youtube.com/watch?v=ZyZ4z662v5w