Good news: Just for President's Day, Activision be unlocking Call a Duty: Black Ops' two secret modes: Dead Ops Arcade, the top-down dual-stick shooter hidden in a DOS emulator, 'n the Presidential zombie fight known as "Five" that be unlocked upon completion a the single-player campaign. They'll remain unlocked throughout the weekend -- free a charge -- so pillage 'em before they return t' Easter Egg status.