I know this is old, but never saw a good link posted on it, so, here it is, for those who missed it. Not all that much info, but I found it cool.
http://www.vfxworld.com/?atype=articles&id=3129&page=2

“We used Digital Fusion for compositing and LightWave for the end throne room scene because it was all hard surface stuff and LightWave is great at that.”
