These three talks were given on Aug 13, 2014.

- [Knitr Ninja](https://dl.dropboxusercontent.com/u/15335397/slides/2014-knitr-ninja-Yihui-Xie.html)
- [The Next Generation of R Markdown](https://www.dropbox.com/s/p28yzx1lccux06p/UseR-2014-rmarkdown-io.html)
- [Packrat - A Tool for R Dependency Management](https://www.dropbox.com/s/jzhrcvjju6gz0nq/packrat-slides.html)