I've been having some fun playing around with Visual Studio 2008 and the .NET Framework 3.5, and wanted to summarize some of the content I've put up on channel9 and other places.

Samples

• The Conversation Sample remixed -- if there is one sample in the SDK to help you understand what is going on with context passing and duplex messaging, this is the sample that helped me learn it.  I had this sample reworked a little bit so that you don't have 5 console windows open.
• Pageflow sample 1, live hosted -- watch this as pageflow is hosted "live" in the cloud.  This lets you interact with a pageflow as well as dive into the code using some tools my team has built.
• Pageflow sample 2, live hosted as above -- this is the sample that shows how we can leverage the navigator workflow type to be in multiple paths at the same time (a parallel state machine almost).

Screencasts

• Intro demo -- a 10 minute walk through of building Workflow Services
• 0 to Workflow Service in 60 seconds  -- a very quick tools walkthrough
• Dynamically creating service contracts using Workflow Services in Net 3.5 -- the way to dynamically create a contract using a workflow first approach to building it.
• BizTalk Server 2006 Extensions for WF -- A screencast from Jon Flanders walking through the work that has been done to host WF inside BizTalk.
• Building WCF Services with WF  -- A screen recording with the PM responsible for the WF-WCF integration
• Introduction to the Windows Workflow Foundation Pageflow Sample -- A screen recording with the dev responsible for building pageflow.

Channel9 Videos

• Programming JSON with WCF in .NET Framework 3.5 -- an interview with a Dev and PM from the WCF team talking about how and why talking JSON over WCF is interesting.
• WF and WCF Integration In .NET Framework 3.5 -- meet the team that brought us the Workflow Service features in .NET 3.5

In the upcoming months, we've got more samples and content coming out about these features.  If you've got questions, keep 'em coming.