How to cite packages in R

R is a nice statistical tool or language to use, because it is free and provides many useful packages for data analysis.  I just found out about a neat way that R will actually generate a BibTeX citation for you regarding a specific package.  It’s explained here:

http://astrostatistics.psu.edu/su07/R/html/utils/html/citation.html

Do you have tips on using R?  If so edit this post or provide a comment below.