This is not about shaders but you all may want to look in on Smith Micro  http://motionartist.smithmicro.com/motionartist-beta.html   MotionArtist is a beta available for download now from the above link.  Really worth checking out.  Will be interested in seeing what u experienced tooners think of it.

Esther there's a html export etc which might interest you in particular. :)