Git aliases including some for working with Drupal.
Requires git 1.7.10 or later.
Clone this repository anywhere you like*. You can then include it from your global git config thus:
[include]
path = "path/to/repository/aliases.config"
Further reading: http://stackoverflow.com/questions/1557183/is-it-possible-to-include-a-file-in-your-gitconfig
[*] On OS X, I personally like ~/Library/Application Support/git/aliases, and I keep a global gitignore file in there too.