Jeff Prosise has posted about the new feature of Silverlight 3 for dressing up animations - Easing.
Animation easing makes it incredibly easy to add effects to your animations. Silverlight 3 Beta 1 comes with about a dozen different easing classes, including BounceEase, which adds bounce to animations, and ElasticEase, which adds oscillations. You can also write easing classes of your own by deriving from the EasingFunctionBase class. But the predefined easing classes are so rich and varied that you may never need to write your own.