Concurrent Access just posted Reference Assistant, a new VS 2010 extension
Reference assistant helps you visualize the dependencies in your .NET application to help speed up development, improve your deployments, and debug sticky dependency bugs.
Some of the interesting features I read about were their Visualizer for IoC / DI configuration files, ability to identify missing assembly references, and configuration file type resolution.
You can check out their extension here:http://visualstudiogallery.msdn.microsoft.com/en-us/BA1FF7E5-1C24-4386-AD40-1C1C83BC59F0.