Shazzam simplifies editing, testing and learning WPF/Silverlight Pixel Shader Effects. It compiles HLSL code, auto-generates C#/VB shader classes and creates a testing page for each effect. Plus it supports animations of the effect. Learn more at
This is the source code site for Shazzam.
For more information about Shazzam go to the companion site
There you will find more information about Shazzam. Also on the site are many demonstration videos.