Video here.
It's a really interesting conference about the challenges Arc System Works faced while trying to make a 3D game look like a 2D one, and the tricks they used in order to achieve that result.
Some of these aren't that surprising (inverted model to get the exterior outline, stuff like that), but the normals orientation bit is really cool.
they also show one tiny image of a canned project that set the basics for GG Xrd look