In case you were looking for a way to fill up your entire XBox 360 hard drive with downloadable co-op content, Xbox Live Marketplace's summer deals have you covered. Mission packs for older games? Check. New Arcade releases? Check. There's only one caveat - some of these will expire soon, so don't twiddle your thumbsticks. Well...do twiddle your thumbsticks, but only after you've browsed the below list.

The Zombies lore of Call of Duty: Black Ops has come a long way. Adding more difficulty and more personality with each map pack, Treyarch has built a legend within a legend - a game mode that will be talked about for years, and a backstory that most gamers love to play over and over again.

This very gooey video from the upcoming Call of Duty: Black Ops DLC, Rezurrection, has tremendous Zombie footage.  Much of the video is live action, depicting various zombie experiments from the "Call of Duty Zombie Labs."   I think there's even some sort of Zombie Admiral Ackbar around the 1:00 mark.  This DLC may be the last hurrah from Black Ops, but it's the most co-op friendly content by far.  Five Zombie maps will be included in the download, and each will support four player online co-op. (Or two player local co-op, or two player local co-op with two more players online.) 

Either this image is blurry or you have had too much to drink

The second map pack for Call of Duty: Black Ops is now available on Xbox LIVE.  The new DLC  is titled "Escalation", and features four new versus maps and one new Zombie map.  If you have seen the trailer for "Call of the Dead", you know we are in for a real treat.  Players can team up locally or online, taking the role of one of four horror heavies, and do battle with the iconic zombie master himself, George A. Romero  The other four maps can be played in the local and/or online co-op mode, Combat Training.  We'll have our detailed impressions of all the new content up soon.