This script allow you to download fontfaces from google fonts and use it on your own server (using a bookmarklet)
Demo page at http://goofy.warriordudimanche.net/
How to use Goofy? First, put the script on you own server then go to the script's url and follow the instructions
Drop the bookmarklet into your fav bar go to google font page and select all the google fonts you'd like to use on your own server
Click on the "Use" button (in the footer) Then click on the goofy bookmarklet and receive a zip with the woff fonts and the local css file to use them, ready to use !