Lately he has been generating continents worth of elevation maps based on geometric Voronoi cells, continental drift, coastal erosion also biome generation based wind direction and temperature. :o
http://procworld.blogspot.com/
Ok, this is just incredible! And I'm loving how logically things work and are explained. Wouldn't it be great to get a system like this feeding data into a Terragen setup? Ooo it's exciting. ;D