e-SPECS for Revit is a software program that interfaces with the Revit model, extracts assembly information from families in the project, imports spec sections based on that information and produces a Project Manual manual specific to the assemblies in that project. As changes are made in the project the Project Manual updates based on those changes.
Other neat-o features are; the ability to do mark-ups of the specs from Revit, and a project specific Keynote File (again, based on the specs, which are based on the project.)
Keen! See a recorded online Demo here.
Now that's creative use of information in models.