To celebrate the release of the ‘Escalation’ Map Pack for Call of Duty: Black Ops, TreyArch has kicked off its double experience weekend. You will gain double the XP than you normally would and the event even will last as long as Tuesday the 10th at 10am PDT. So you will have plenty of time to take advantage of it, that is of course if you can stay away from the new zombie map ‘Call of the Dead’ which is pretty sick. You can see our review of the map pack here and TreyArch as well as Activision are happy to now have over 10 Million Black Ops Facebook fans.