Doing the same thing over and over again
Summarizing many, many lines of fit
Creating an RSS feed for R blog posts.
Some basic uses of nonstandard evaluation.
That pesky ampersand.
Useful Github page alert: Dean Attali has started collecting links to RStudio addins, including the one I made for wrapping text in RMarkdown.
Because the functions expect a list of expressions.
Posterior predictive values and the like.