Fable 2 still doesnt beat Oblivion.
Oblivion had 1000 talking NPCs.
60,000 lines of dialogue, over 50 hours spoken.
http://www.cbsnews.com/stories/2005/05/20/tech/gamecore/main696763.shtml
Half the DVD space was taken up by dialogue.
http://www.rpgfan.com/previews/oblivion/index.html
But since we all know how incredibly good Oblivion was, this is good news about Fable 2.