The one where Michael Burge writes a chess engine to demonstrate how to load and execute arbitrary machine code from a Python user-defined function from within Amazon's Redshift database service.

This is the technique I use to manage my dot files across a few computers (bare git repository in ~ with an alias for git).

But some of these projects look interesting: https://dotfiles.github.io/#general-purpose-dotfile-utilities

Good overview of vim's textwidth and formatoptions for automatically (or not) wrapping text.

Ben Hoyt's account of contributing a feature to Python's standard library is a good account of the open-source process gone well.