Radial/Equirectangular environment mapping

[sqrt[-1]]

I have been playing with Radial/Equirectangular environment mapping lately and thought I would release a demo.
It is more of a solution looking for a problem (as I think cube maps are superior) but it might inspire someone.

Doc:
http://dtrebilco.googlecode.com/files/RadialEnvMap_1.0.pdf

Demo:
http://dtrebilco.googlecode.com/files/RadialEnvMap_1.0.zip