In the last release of IBM SPSS Modeler for the first time we introduced full integration with R. With this integration we were not only embracing R but also extending the possibilities of R. Last week we launched the Catalog of Predictive Extensions on AnalyticsZone. Here you will find a number of extensions that can be downloaded and installed in your IBM SPSS Modeler workbench for free. 10 extensions are available today and many more will be coming during the year.
SPSS Modeler Marketplace
For the moment we are opening it with 10 extensions but we have many more coming. All of them include documentation, video-tutorials and examples.
You can learn more here
If you know R you can start creating your own nodes as well. Learn how to do it in this article:
Create new nodes for IBM SPSS Modeler 16 using R