As last year (and again at the BoC in December), I presented a three-hour tutorial on high-performance computing with R. This covers profiling, vectorisation, interfacing compiled code, debugging, parallel computing, as well as scripting and automation. Slides, and a 2-up version, are now on my presentations page.
I also gave two regular conference presentations. The first was on my Rcpp and RInside packages which facilitate interfacing R and C++. The second talk, based on joint work with Charles Blundell, describes our cran2deb system for creating Debian packages of essentially all CRAN packages. I will try to follow up on this with another post. Slides from these talks are also on my presentations page.