Wow !!!
Yes, this is what many have reacted to this new behavior of the Silverlight Apps recently.
Codeplex has a new project on Silverlight 3D Controls for transforming the look-n-feel of the controls in your app, or more precisely, the app itself with an effect of adding more depth to its dimension.
This is achieved using a control from this library, DepthCanvas.
You have the option to set its ZDepth as well as set the Speed for the animation.
You can find this on Codeplex here.