Call of the Dead is the Black Ops zombie map was released as part of the Escalation Map Pack. It introduced lots of new features including a ‘boss’ zombie, zip lines and much more.
It seems like a long time since the last truly worhwhile Sonic experience. The last 3D one may very well be found in the Dreamcast release of Sonic Adventure. After 11 years of growing old, the game has been dusted off for a port release on the XBLA service. Here is a review of Sonic Adventure XBLA.