Kraftwerk...classic...
get the song "Satisfaction" by Benny Benassi..all his stuff rocks
Andrea Doria is a good artist
The Prodigy is awesome..
Definitely get some Crystal Method (Born Too Slow is an Awesome "rally" song)
Kraftwerk, all there stuff is very almost numbing and relaxing...
Can't forget Louie Devito for more club oriented stuff..
Chemical Brothers are really great too..

Front 242 is more industrial, but is considered electronica/techno...Headhunter is a great song by them...

All the Funker Vogt stuff is very angry and quick....
KMFDM is a great electronic/industrial type one...get the song "DIY" or "Megalomaniac" by them..both good.

One of our forum members with a few Audi coupes can name more artists for you...