Packt Publishing has released another great BizTalk resource by title of Microsoft BizTalk 2010: Line of Business Integration.
Authors have done an excellent job detailing integration with Dynamics (CRM,AX), SalesForce, SharePoint, and SAP. There was not much documentation on integration with Dynamics for instance and most it was out dated. Currently there a couple of BizTalk books out there and all they focus mainly on out-of-box features and capabilities. None of them really talked about capabilities offered by BizTalk Adapter Pack that has been out there a couple years now. Line-Of-Business adapters in this package enable integration with SAP, Oracle, Oracle eBusiness Suite, Siebel and and SQL Server. This book does deal with integration with a couple of these LOB systems.
Besides that it shows how to integrate with SharePoint, and Dynamics two other Microsoft Products, which may seem that that easy to integrate with. It isn't, as it can be quite complex, but with guidance provided in this book it will make life easier for you. If professionals like yourself are facing issues on current projects with these systems, or need guidance on how prepare yourselves before going to do integration project, or want more background/knowledge than this book will be extremely useful for you.
I myself have bought the book and promoted it during a talk on Sales Force integration I gave to BizTalk Dutch User Group as it was a great resource for preparation and leveraging samples.