Anyways, I'll name a few of the greats people should know about. A few have already been mentioned.
Concord Dawn:
Composed of 2 guys, Evan and Matt. They use, or used to use Fruity Loops as their main tool, surprisingly.
Calyx:
Has the most original bass lines of almost any artist I've heard. Has his own unique dark sound.
Noisia:
3 guys from Holland, and fucking beasts in the dark part of DnB.
London Elektricity:
Great on the light side of DnB.
Also great -
Logistics
Uses Reason 2.5 8)
High Contrast
Uses Reason 3 8)
Teebee
Evol Intent
Uses a lot of sampling, and is fucking amazing at it.
Black Sun Empire
Good, but everything has to have the a similar sound.
Messiah
State of Mind
Nu:Tone
Klute
Low key DnB.
John B
Electrostep ftw.
Dieselboy
Phace
Cyantific
And everyone else on the Hospital record label.
yeh yeh.
Also, Geier is amazing.