Last week, we spilled the beans on the new Call of Duty: Black Ops Annihilation Content Pack, which will release on June 28.  Today, we have a shiny trailer to go with it.  The new multiplayer maps—Hangar 18, Drive-In, Silo and Hazard—look fairly standard, but it’s the new zombie level, Shangri-La, that stands out.  We’re used to mowing down the undead with guns in countless other games, but impaling them with spike traps and then making a getaway on a water slide makes us feel all tingly inside…or maybe we should switch to decaf.