Martin Danner has been doing some interesting stuff that I’m now just finding. For example, take a look at his post about his MSF Analysis Tool. In his post, you’ll find links to responsibility matrices (PDFs) for both flavors of MSF that ship in Team Foundation Server.
I took it upon myself to reverse engineer the MSF Process Guidance into a database format that can be easy queried. I wrote an application called the MSF Analysis Tool that parses the XML source documents used to generate the MSF Process Guidance documentation, and then loads the MSF process-related information into a SQL Server database. From there you can run queries that reveal the internal structure of MSF.