At the Best Buy Theater in New York City last night, the second annual Metal Masters Clinic took place. Featuring members of Anthrax, Megadeth, Slayer and even ex-Dream Theater drummer Mike Portnoy, the free event was a blast for fans. However, the big surprise came towards the end of the evening when Phil Anselmo (Pantera, Down) took the stage and everyone rocked out a couple of classic Pantera tunes. After the jump, you can see everyone busting out A New Level and Fucking Hostile. To put it simply, these videos kick insane amounts of ass.