I just installed the Yanone Kaffeesatz Google font as the title font on this blog.
I was inspired by Zandy Ring's The Veggie Experiment font titles.
Here's Three Steps to install a Google font in your blog:
1. Go to the Google Webfonts page and choose a font.
2. Embed the font in your page
Added the second line to the HEAD section
3. Update your CSS
Modified .PostTitle to include 'Yanone Kaffeesatz'