I already mentioned in this blog post that one of our Belgian community people, Jelle Druyts, wrote an excellent article on "The Command Pattern In Windows Presentation Foundation".

Now big was my surprise to see it referenced as one of the headlines on the home page of the Windows Vista Developer Center at MSDN. Check it out:

The Command Pattern in Windows Presentation Foundation
Learn how to use the Command pattern in the Windows Presentation Foundation. This design pattern abstracts all actions the user can perform in an application into the notion of "commands." (March 2, Technical article)