Here are a few of my pet projects I am currently working on:
Nuget Packages: restful-mvc, restful-client, restful-wp7, restful-sl, specwatchr, oak
Link to Nuget Packages. Restful-wp7 and restful-sl are nuget packages that give you the ability to call restful services using a fluent interface in WP7 and Silverlight 4.0. Specwatchr is a suite of ruby scripts that help you do continuous testing in .Net.
I'm the co-author of NSpec.
FDG.NET is a particle physics engine built in Silverlight. The engine is used to give a visual representation of how different entities are related to each other. This construct is commonly called a force directed graph (wikipedia).