Jesse Bridgewater works on “social search awesomeness” for the Bing search engine, and is setting up his dev environment with the necessary tools including python, vim, and R. Jesse has shared a handy script he uses to install all the specialty packages he uses for his data analysis. This is a handy script to modify for your own purposes, but it's also interesting to review the packages Jesse lists as part of his standard toolkit:
Graphs and Networks: igraph
What R packages do you consider to be part of your standard toolkit?
Jesse S.A. Bridgewater: My Favorite R Packages (Installed With One Command)