Not sure what Wu-Tang has to do with this, but....
Seriously though, is Mongo an ODB, or a document oriented database? ODBs/OODBs imply a much different use-case and functionality, and I think we ought not conflate the two.
Mongo is not an ODB in the traditional ODB sense. Mongo is just a document (or blob) database. ODB supports relationship, link traversal, inheritance, etc. Basically the whole shebang of the OO notions in a database.