Great stuff Luke thanks for doing this.
Two questions.
Why AO over Radiosity in the Radiosity tag?
And why 16x 2x when Martin has suggested to only use 1x by whatever x?
AO because it's faster and I think it gives a more neutral result, it most cases (try the settings in the tut with full radiosity and see the difference)
Everytime I use full radiosity in similar scenes, I get an overly warm yellowish cast, so I tend to use it only on close up and single oblect work.