During the past few weeks I've been delivering the Smart Client session at the Heroes Happen Here launch events around the southeast. Here are several good articles and videos related to that session. Also if you find any that I missed, please feel free to suggest them via a comment.
Part 1 - WPF with Visual Studio 2008
Part 2 - Using Windows Vista APIs to light up your applications
Part 3 - Workflow Services with WF and WCF
Part 4 - Occasionally connected applications (OCAs)