P.S. What's ambient occlusion? That's a new one on me.
Ambient occlusion maps are kind of like radiosity lightmaps, but not as "baked" - you can use dynamic lighting on it and it will still look realistic.
Dynamic occlusion maps are basically the same as ambient occlusion maps, but the occlusion map is generated dynamically, which means a reasonable approximation of animated models with radiosity in real-time.
