We have a certain need. In a SharePoint site, sensitive documents are collected as attachments to lists that contain business task data. A group needs to see what the disposition of those documents is (ie, where are they now in the processing, etc) without being able to see the actual document.
My first thought was to use a Content Query Web Part or, perhaps, a Data View Web Part, but the problem that then appeared to me was: these people do not (and cannot) have access to the original lists. If not, then how could the web parts allow them to see a couple fields from those original lists?