In this video tutorial, Victor Gaudioso demonstrates how to create a simple rotating banner in Silverlight.
Source: Victor Gaudioso's Silverlight Blog
In this 30 minute video I show you how to create three different UserControls; create Storyboards to fade them all in and out; then programatically loop through them. But you can also click buttons on the bottom of the page to make them skip to a certain frame and the animation continues.