Here's a few that don't seem to be to well known I've discovered and been diggin lately

Starring Janet Leigh
The Plasmarifle
Khert-Neter (Like the sound of Nile with the groove of Kylesa)
A Kid Hereafter In The Grinding Light
Car Bomb
Jude The Obscure
The Postman Syndrome
Ancestors
The Angle Obscure (my friend's band check em out on myspace, these guys are good)