$ brew tap homebrew/cask-fonts # You only need to do this once!
$ brew install font-andale-mono
Of course, most other recommendations in this thread are available as well:https://github.com/Homebrew/homebrew-cask-fonts/tree/master/...
These land in the same folder as user installs through Font Book. Using homebrew makes moving to a new system as easy as bundling the Brewfile.