This Nokia Developer Wiki article explains how the Namedays application is made for the Windows Phone 7. It shows how to load XML data from the server side and bind data to UI. It also illustrates how to localize the application for different languages and how to use Scheduled Task Agent to update application.
You can read the whole story and load the source codes here.
SheepClock for WindowsPhone by spiretos(Spyridon Antonellos) is a clock and alarm scheduler application created using both Silverlight and XNA. The application brings an attraction on a little Sheep that runs and jumps over the fence again and again. It also has a nice set of themes and adjusts with the device accent color to make it more personalized.
The application demonstrates the use of both Silverlight and XNA in the same page along with IsolatedStorage, StoryBoards, handling infinite game loop and many more game elements. If you are a WindowsPhone lover this application could be one of your learning tutorials.
– Somnath Banik (on behalf of the Projects Moderation team)