The guys from joystiq.com were lucky enough to wander in the office of the legendary Blizzard with a camera (you can see all 97 photos from the link). Photo quality is mediocre, but the atmosphere is excellent. Traffic :) Art to Starcraft in the library
Server health monitoring
Old school is the best school ')
Carrrigan with Blizzon 2008
Diablo World Map
Library Blizzov mainly consists of fiction and books on programming
Starcraft prototype? :)
UPD. Habrachelovek d1mm found another photoset on ign.com . There are three pages of commented photos.