33. El-P, 'Cancer 4 Cure'

Dedicated to his late friend Camu Tao, El-P's latest bursts with anger and defiance in its rhymes and beats. Whether he's rapping about domestic abuse, homicidal soldiers, corruption or straight-up disrespect, El-P  is ready to take on all challengers. And it certainly doesn't hurt to have some backup from Danny Brown, Killer Mike, Despot, Mr. Muthafuckin' eXquire and more of the record's standout guest stars. -- Dan Reilly