Here's my Christmas present for you all: New features for the PHP script to come!
Probably the most important one is the "interlanguage" feature. Just for German right now, but is can be easily extended for other languages as well. I set up an example at http://wikipedia.sourceforge.net/fpw/wiki.phtml?title=Vikings where I added "[[de:Wikinger]]" to the text (it doesn't matter where the link is within the text). Now, I have the "de" namespace internally defined as a language namespace, going to the German wikipedia. The "de:" link is NOT displayed within the text, but in the article header, as you can see. The "Deutsch" link goes straight to the "Wikinger" article in the German wikipedia.
This is only the first step. As I explained elsewhere, once all wikipedias are changed to the PHP script, these links can be collected automatically (say, each day or each week), and ensure all existing language versions are interlinked properly.
Another toy is the "contributions" link on every user page. Try mine, for example, at http://wikipedia.sourceforge.net/fpw/wiki.phtml?title=user:Magnus_Manske. The "This user's contributions" link at the top goes to a page with a list of all articles I ever edited, according to the database. (These are only the edits I did on the test site, of course).
Finally, a minor thing : On Recent Changes, all edits that were made anonymously have the IP marked in red; as most vandals don't have a user name, it might be of advantage to spot every anonymous edit easily.
Don't get run over by a reindeer, (why don't we have a [[reindeer]] article on the 'pedia???) Magnus