Braulio Diez, a friend of mine I known during the TechED 2008 in Barcelona, together with other authors has recently written a book about Silverlight 5. The "Mastering LOB Development for Silverlight 5: A Case Study in Action", published by PackLib is an interesting book that is able to point the light on the Silverlight topic, mixing together a good scan about Silverlight 5.0 features and a number of "cases study" that focus the attention of the reader on the power of this, still unmatched and irreplaceable, piece of technology.
In a time that seems to be pointed to the most new evolutions, inside the new version of Windows, mostly directly derived from Silverlight, reading this book may be a useful exercise to understand what it can do and what someone can still do using XAML instead of HTML5.
My thanks to Braulio for the pleasant reading.
http://www.packtpub.com/mastering-lob-development-silverlight-5/book