Here is Ambient occlusion turned on.

I still have very simple settings on. same as above except for the occlusion.

render time went up to about one minute and a half per frame. I could have cut this down by baking the textures to an occlusion map. Global ill is not turned on. No HDR image.

Ambient Occlusion on


There are few more features that look very interesting

Depth of field
Motion blur
and sub d rendering