One of the things that's really impressed me about the New Microsoft is that they're much more open about their sourcecode, especially the Visual Studio guys (who know their main customer base are all over issues like this).
It is even more impressive to see Scott Hanselman digging into their sourcecode for the latest VS2008 and .NET 3.5 SP1 Beta and using NDepend to show us how much has changed. In my books that absolutely rocks!
It actually makes me wonder whether this sort of analysis should form part of Elcom's sprint delivery procedures. In other words that we actually make the effort to stand back and analyse the sourcecode changes from 20,000 feet, rather than only looking at backlog items completed.
[UPDATE: Patrick Smacchia the NDepend lead developer (and C# MVP) takes the analysis one level deeper, again using NDepend.]