Wow, this looks incredible. I just hope that there aren´t too many things one can´t see on the screenshots but are making them unusable...

Lately I was looking a little into shadowmapping with pointlights as I just for fun am creating a little cave scene when I need to get out of the stuff I should do instead... and I am really missing shadows there.
Is there any article you can recomment me besides this great one: http://http.developer.nvidia.com/GPUGems/gpugems_ch12.html ?