Next month (19th to 22th of June) we are going to give in Lisbon a technical workshop on Windows Workflow Foundation.
This is not a typical run of the mill training with a standardized program. It's a highly customized training, done by someone who has been working in the WF trenches (it was still called WWF back then :-)) since the early early betas.
Who should attend this course: This course is targeted at developers and architects who want to learn all the details about Windows Workflow (architecture, programming model, key concepts and features) and the best way to take advantage of the workflow engine included in the .NET framework 3.0
More details here