Call of Duty: Black Ops Escalation - Call of the Dead [Official HD]

http://www.callofduty.com/media
On May 3rd, download "Escalation", the second Call of Duty: Black Ops map pack, to play as the zombie-killing dream-team of Sarah Michelle Gellar, Robert Englund, Michael Rooker, and Danny Trejo against a new and unnerving zombie menace. Set in a mysterious, ice-covered, remote Siberian island and inspired by legendary writer and director George A. Romero, a group of four fearless explorers fight for their lives amidst an army of bloodthirsty Soviet zombies.

The Escalation Content Pack will be available first on Xbox Live on May 3, 2011.