Paul has a week of workflow web-casts on going for those of you who missed PDC or missed our sessions at PDC.  The full detail and links to recordings are here: http://blogs.msdn.com/pandrew/articles/460630.aspx

 
They are at 10am PST every day this week. 
 
Here's the remaining ones:

Wednesday: Workflow + Messaging + Services: Developing Distributed Applications with Workflows

Thursday: Developing Event Driven State Machine Workflows

Friday: Extending Workflow Capabilities with Custom Activities