I don't think there's a better example than a swift kick in the nuts than Virginia's Lamb of God. These motherfuckers are intense. The music is precise to the point of perfection, yet that never gets in the way of the groove or emotion of the song. It's not robotic and soul-less like Joe Satriani or Steve Vai.
Plus, politics and metal have a nice way of meeting at the crossroads in this band. The more fucked our government is, the angrier Randy Blythe (vocals) gets...and who can blame him.
Without delving into politics of my own, here's Lamb of God doing what they do best...Wasting every last motherfucker in the room. Period.