Mark Triggs from the National Library of Australia has shared their Wikipedia code here:
This adds some extra smarts, like dealing with birth/death dates and filtering out authors without words like "author" in their entries.
Unfortunately, it also adds a new PEAR dependency (http://pear.php.net/package/Text_Wiki_Mediawiki/
We should consider merging this with the current trunk Wikipedia code; perhaps this would also justify a new [Wikipedia] section in config.ini to allow configuration of some of the advanced features. The possibility of whitelisting/blacklisting certain name has also been mentioned and might be another useful addition to configuration files.