OOOOOOOOOOOOOOOOH can't believe I forgot this:
EVERY SINGLE PART of Indian Poker pt. 3 by Brainiac.... the sounds that it makes before the lyrics are just haunting and awesome, you feel them in your chest and in your spine, it's crazy... and the lyrical section is also AAAAAAAAAWESOME. Damn... I love that song. RIP Tim Thomas
EDIT: OK, OK, OK. One more and I'm done:
The guitar intro to Bad Brains - Fearless Vampire Killers
Just SOOOOO badass.