Videos of the invited talks of the useR! 2010 conference as follows (courtesy by Kate Mullen and NIST). This site also aims at collecting the materials (video, slides, R code) of local R users group (RUG) meetings and various other R talks and bringing them to the larger R community. See more videos here, and if you’d like to contribute with materials, see more information here.

Welcome by NIST and
Frank E. Harrell Jr: Information Allergy

Mark S. Handcock: Statistical Modeling of Networks in R and
Panel Discussion: Challenges Bringing R into Commercial Environments

Luke Tierney: Some possible directions for the R engine and
Diethelm Würtz: The Hull, the Feasible Set, and the Risk Surface: A Review of the Portfolio Modeling Infrastructure in R/Rmetrics

Friedrich Leisch: Reproducible Statistical Research in Practice and
Uwe Ligges: Prospects and Challenges for CRAN – with a glance on 64-bit Windows binaries

Also, audio of Richard M. Stallman: Free Software in Ethics and in Practice can be found here (the main talk) and here (the Q&A). More details about the talk and the Q&A session is available on the original blog post link.