Metalcore
A mixture of Melodic Death-Metal Riffs, Harcore-Style Breakdowns, and the occasional Emo Chorus.  Metalcore is (in my opinion) one of the greatest musical genres out there. Most older fans claim that the newer bands are'nt even metalcore but they are just idiotic people who dislike change.
Atreyu, Killswitch Engage, Norma Jean, As I Lay Dying, A Life Once Lost, Bullet for my Valentine, Heavens Shall Burn, Bleeding Through, Between the Buried and Me, Through the Eyes of the Dead, Cephalic Carnage, Converge, and more metalcore bands.