Umm…some of Squarepusher’s stuff could be considered like that (Really only thinking of “Tundra” from “Feed me Weird Things” right now). I suppose I’ll use any chance I can get to promote Squarepusher, though.
You might want to check out Tundra, though. It’s at his MySpace.
Noisia, Prolix, Concord Dawn, Evol Intent, Alliance, Phace, Spor, Ewun and Unknown Error are a few more to add to the dark n deep list
For randomness i’d recommend Venetian Snares, Aphex Twin, Autechre, Plaid etc