Microsoft Office Interactive Developer Map (a WPF app)

Way better than a poster, this is a handy application that helps developers to drill down to each product and technology and learn about new features, objects, Web services, namespaces, and schemas required to extend Microsoft Office and build custom Office Business Applications (OBAs). This application also includes links and pointers to online resources available on Office Online, MSDN, TechNet, Channel 9, Channel 10, and OBA Central.