"Crytek Sponza" scene:
Marko Dabrovic && Crytek
The Stanford 3D Scanning Repository
Marcin Stachowiak (Banak)
W.A.S.P. - The Heretic (The Lost Child)
Sadly, I do not know whom to thank for the other models, as they came from various "free 3d model" websites without any author information attached.