Just came across this from One Thing Well[0]. Basically you run a single command and you get a vim.YOUR_USERNAME script that you can copy over to any machine and execute to have your complete vim environment with plugins and all. While I already use git to manage vim config[1], making this work elsewhere means doing a git clone and some symlinks. Having it be one step for occasions when I quickly want a familiar environment is cool.
[0] http://onethingwell.org/
[1] https://github.com/michaelmior/vimrc