I am trying to implement a recently used list in the ApplicationMenu just like Office 2007.  I have figured out how to populate the list and how to set an image.  I have not figured out how to pin the item to the list.  In Office, the user can click on an item in the list and they can also click on the pin to either pin or unpin the item to the list.  Is there any way to accomplish this in your ribbon?  Is there a sample project somewhere in the Help file?