looking for "Blockfield" module, similar to "Viewfield"

I've searched for this, but haven't found it. Seems like it might be useful. Anyone know if there is a module that would allow you to make CCK fields to insert blocks (user-created and otherwise) into created content types along the lines of Viewfield module? It could come in very handy for php snippets that you might want to include for certain content types and to format (and weight) consistently with CCK fields.