ADFS v2 Rules Language–Great Short Video
http://microsoft.com/showcase/en/us/details/b70adae9-a01d-4b09-9fe9-69b041563640
An Introduction to the Claim Rule Language
Watch this video to see Stuart Kwan (Group PM for the Federated Identity product team at Microsoft) introduce the concepts of the Claim Transformation (Rule) Language used in "Geneva" Server Beta 2. Please leave a comment on the TechNet page to let us know what you think (click Windows Server logo to visit the guide). Thank you for watching! – The Federated Identity Documentation Team