As far as I have seen content controls in Office 2007 render to either a SdtRun or SdtBlock object. The nice thing is that both of these inherit from SdtElement. This allows you to take the query from my earlier post and replace SdtBlock with SdtElement and now you have a universal retrieval. Of course as with any tool you need to be careful you don’t take it too far. Depending on the structure of you document this may not do what you need.