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.)
We're going to miss the lack of zombie maps in the upcoming Call of Duty: Modern Warfare 3. C'est la vie de la mort-vivant. The Rezurrection map pack will be available on August 23rd for the Xbox 360, and we expect a PlayStation 3 and PC release shortly thereafter.