Working on some upcoming Greyscale volumes that will include Wikipedia content, I am recently using very much the PDF/ODT export functionality that the Wikimedia Foundation has integrated during 2009 (in collaboration with PediaPress, a start-up located in Mainz, Germany).
An amazing feature is the proper implementation of footnotes when exporting a set of articles in ODT (Open Document Text) format. Unfortunately, they are a few glitches that need fine-tuning. I submitted some observations to the PediaPress bug-tracker, hopefully this will help to improve this functionality…
Wiki-to-print function active on German Wikipedia – January 27 2009