Hatebreed, Throwdown and if your from Jersey and like hardcore you gotta like E-Town Concrete cause they're from Elizabeth.
http://www.youtube.com/watch?v=9tqxtEFAJEU
http://www.youtube.com/watch?v=IprUuFBpw4I
http://www.youtube.com/watch?v=6tO1tuaprfM