The [open source statistical software R](http://www.r-project.org/) has a range of contributed packages. Some of them include datasets. 

I teach research methods in psychology and I'm looking for interesting real-world dataset to use as the basis for tutorials. I've found a few in contributed R packages (e.g., [AER](http://cran.r-project.org/web/packages/AER/index.html), [psych](http://cran.r-project.org/web/packages/psych/index.html)), but I'm not aware of a general resource listing packages that supply multiple interesting, real-world, psychological datasets. In particular, some textbooks have an aligned R package containing many interesting datasets. 

* **What R packages include multiple interesting, real-world, psychological datasets?**
* **For any package identified, it would be good to have a sense of the kinds of datasets contained**