We've found just the code you'll need to have the slick looking Windows Phone loading animation on your application. 




The code is over at bugail.com.  Here's a look at the specifics of the example.

There are two types of process indicator:

• Determinate – fixed amount of time/data
• Indeterminate – unknown amount of time/data

In this example I’m going to quickly show you how to add a progess overlay to a screen when loading data from a webservice (twitter search service).

Source:  http://bugail.com/index.php/2011/10/wp7-tips-adding-a-progress-overlay-to-a-page/