One aspect of Ubuntu that I really enjoy is the sheer amount of constructive feedback a maintainer gets about the usability of their packages. In my case, CUPS-PDF   has been a landmark example of how beneficial this feedback can be:
See, one long-standing goal at Ubuntu has been to include the capability to generate PDF documents "out of the box" and regardless of which Desktop Environment is used. Many people considered that CUPS-PDF would be an excellent tool, but various technical issues prevented this from working in a security-conscious way. Once that issue was taken care of, someone pondered how the PDF queue could be automatically created at installation time?
It turns out that we're almost there: with the upload of version 2.4.6 into Debian today (which should propagate into Ubuntu within a few days), only one configuration step remains: the selection of a PPD driver. Everything else is automatically detected and configured by CUPS itself. Kudos to our friendly upstream, Volker, for implementing this driver magic in his back-end code! Enjoy!