DWF/PDF Batch Publish
The DWF/PDF Batch Publish plugin automates the use of AutoCAD’s publish command to create DWF and/or PDF files for a folder of DWGs: useful for people who need to maintain lighter-weight versions of their models for viewing and markup.
This plugin was first published as an ADN Plugin of the Month: http://labs.autodesk.com/utilities/ADN_plugins. The plugin has been provided with the complete source code needed to build the application, with the intention of encouraging users of Autodesk software to use programming to tailor the products they use to their specific business needs.
More information regarding this plugin can also be found on Kean Walmsley's blog about AutoCAD programming, Through the Interface: http://blogs.autodesk.com/through-the-interface.