Tim Greenfield has a demonstration of a fun and novel use of the
VideoBrush in Silverlight.
Silverlight provides a variety of brushes that can be used to paint just about any area in your app: from text to shapes to borders. The most common brushes are for painting color and images: SolidColorBrush,LinearGradientBrush, RadialGradiantBrush, and ImageBrush.However, today I paired the less common VideoBrush with an unusual visual element.