oh yeah if you want the dark nasty stuff check out anything by Noisia, Raiden, Break, Total Science, A-Sides to name a few good artists.
Some of the darker tracks I've been enjoying recently include
Vicious Circle & Corrupt Souls - Shadrock
Break - Submerged
Break - Diffusion
Raiden - 6 Foot Ditch
Gremlinz & Stranjah - Tingz
Don't bother with compilation albums, all the best stuff is on 12" singles.
Another shoutcast station with good live shows worth checking out is
http://www.bassdrive.com, the xodus show on tuesdays with dj XO is awesome.