Anything by Slayer, HateBreed, Integrity (or pretty much any old straight edge hardcore), Sepultura, Sick Of It All, Madball {the name of the band I was told is a reference to a weapon (pool ball in a sock)}, Necro, Mobb Deep, 2pac for hip hop....
Integrity: Vocal Test, Blood Lust, No One, Search for Divinity, Mediator, Armenian Persecution, Harder they fall. Earth Crisis: All Out War. Slayer: Exile. Diecast: Singled Out. Pro-Pain: Make War (Not Love), Let Sleeping Dogs Lie. Necro: Beautiful Music For You To Die To, Push It To The Limit, Empowered, Reign In Blood, Big Sleep, Our Life, Most Sadistic. Mobb Deep: Survival Of The Fittest, Shook Ones Part II, Adrenaline, Keep It Thoro (Prodigy). ...and many many more