My own entry is, obviously, vcsh.
Quoth the manpage
vcsh - manage config files in $HOME via fake bare git repositories
In related news, I have been asked to hold my "Gitify your life" talk at LinuxTag 2013. This talk can be found here. While the text on that page is in German, all slides will be in English and I will happily use either language based on what the audience prefers.