In Flames (Gothenburg, Sweden), Marilyn Manson (Los Angeles, CA), Slipknot (Des Moines, IA), Cannibal Corpse (Tampa, FL), Killswitch Engage (Boston, MA), Deftones (Sacramento, CA), Five Finger Death Punch (Las Vegas, NV), System of a Down (Los Angeles, CA) August 11-12th, 2012 Heavy T.O. in Toronto, Ontario Heavy T.O.!!  Toronto’s very own, once-a-year metal festival!  Two days of back to back bands playing music(…)