Right now, I mainly have images that alot of other people has, but I'll try to add to it later.  (Besides, the best images are in the wallpaper section.)
 

Concept arts
An early concept of Raziel
Another early concept to Raziel

Renders
Raziel after burning a vampire
Raziel about to burn another vampire
An angry Raziel w/cool background
A close-up of Kain's face

Images from the Soul Reaver Intro
Bird's-eye view of the Pillars
Raziel makes his enterance
He spreads his wings
A behind view of his beautiful wings