I would have to say its your opinion, but many people do enjoy Kino De Toten, Call of the Dead, Ascension and the World at War maps.
The best zombie map on black ops is the Call of the Dead but really its your personal opinion
Ascension or call of the dead
The Last Map Pack Rezurrection has to be the best because it includes the 4 WAW zombie maps and the Zombie Map Moon. It was the only map pack I have purchased. Second best is any one of the other 3 First Strike, Escalation, or Annihilation.
Nuketown is the best. But then firing range, radiation and then last would have to be the First Strike zombie map assension
The newist maps are the ones in the escalation map pack and they are called zoo/convoy/stokpile/and/hotel
For Call of Duty Nazi Zombies, Unternacht is a zombie map. Verruckt is another zombie map. The game has map packs that players are able to purchase.
There are no zombie map packs, all map packs except rezurrection contain other maps and only one zombie map They must be purchased from the PSN STore or Xbox Live Marketplace for those consoles. Wii does not have Map PAcks for there console. Rezurrection Map Pack has the 4 WAW zombie maps and the Zombie Map Moon and would be the best purchase for additional zombie maps for BLack Ops
Der Riese is the best map its in the 3rd map pack.
It is called Der Riese, it is a secret zombie lab. It's a tight map, it has teleportors and cool perks machines. Best map in COD by far.
I would say Nacht der Untoten or Zombie Verruckt for single player and Der Riese for multiplayer
my opinion would be cotd or kino
The next map pack Annihilation has the zombie map Shangri-La and the last is Rezurrection with the zombie map Moon and you also get the 4 WAW zombie maps as a separate download for Rezurrection besides getting Moon and 4 multiplayer maps.