Generate MSDN style documentation from your code
This looks very interesting and still has a cool name!
Sandcastle
http://www.microsoft.com/downloads/details.aspx?familyid=E82EA71D-DA89-42EE-A715-696E3A4873B2&displaylang=en
Documentation Compilers For Managed Class Libraries
Enabling managed class library developers to easily create accurate, informative documentation with a common look and feel.
