My dotfiles
Some of these files are amazingly old (pulled into SVN in 2008), and they go back well beyond the point at which I understood what some of these files were doing.
That said, these are the files I'm currently using on a handful of personal and work computers for configuring all kinds of things.
For a better idea of tools I currently use/like/understand, see my ansible scripts, which I'm building up as I provision my most recent laptop (a ThinkPad X240).