Utah Teapot in Sponza continued

I've managed to get the "teapot in Sponza" scene to render slightly faster by treating all objects in the scene as static.

Youtube videos (rendered on a GeForce GTS 450):

http://www.youtube.com/watch?v=Rs5Tq8tzp2E (8 spp per frame)

http://www.youtube.com/watch?v=OmTtsFfH_mw (8 spp per frame)