The stars of Black Ops' 'Call of the Dead'

Activision has released a series of video interviews with Danny Trejo, Sarah Michelle Gellar, Robert Englund and Michael Rooker, all of whom feature in the recently released zombie map pack for Call of Duty: Black Ops, 'Call of the Dead'.

The behind-the-scenes interviews give a rare insight into the involvement of these stars in the map pack, and also their thoughts on the Black Ops phenomenon.