Rick Barraza has 3 amazing examples in Silverlight.
- Writable Bitmaps
This example shows how to use pixel shader displacement with line drawing to create some amazing effects.
- Fluid Dynamics
Rick talks about how to do dynamic visuals, why they matter.
- Vector Fields
This example shows how to gray scale an image, do edge detection then use that information to draw vectors on the image for additional effects.
If you want additional information with Rick,
Brian Peek did an interview with him regarding Silverlight advance rendering techniques as well.