I recently gave a Tech Talk at [Big Nerd Ranch](http://bignerdranch.com) on Heroku and their 12 Factor App Methodology. Check it out:
Ruby on Rails Heroku Survival Guide: A Big Nerd Ranch Tech Talk from Big Nerd Ranch on Vimeo.
While this isn't a game changing improvement, I feel like it does raise my "quality of life" as a Rails developer just a little bit. Happy coding!