At Lydia's presentation in Cologne I talked about using persondata for Wikidata. I guess I'm not the first & only one to think about that, but since I'm new to the list, I thought I should share my opinion with you. In Wikipedia (as well as in the German Wikisource, for one) there are two uses of standardized data affiliated with persons which should be implemented in Wikidata:
1) Persondata http://de.wikipedia.org/wiki/Vorlage:Personendaten is implemented in a lot of Wikipedias and also widely used (first by the German Wikipedia, then others followed). The template features Name, Alternative Name(s), Short Description (like "Dutch Politician"), Date of Birth, Place of Birth, Date of Death, Place of Death. Somebody should write some code to have this information drawn to Wikidata. Ask APPER (http://de.wikipedia.org/wiki/Benutzer:APPER), he's an expert on this.
2) Authority Control or "Normdaten" (http://de.wikipedia.org/wiki/Vorlage:Normdaten): Wikipedia is listing Authority Control Numbers from a variety of institutions. This is most widely used on persons, but there are also corporations, events, and so on. Again, this is implemented and used in a lot of Wikipedias but most widely at the German Wikipedia. Since April 2012, it features the type of data (p = Person, k = Corporation, v = Event, etc.) and some authority control numbers, most common GND (Gemeinsame Normdatei) but also LCCN (Library of Congress Control Number), NDL (Web NDL Authorities), and VIAF (Virtual International Authority File). Since 2006, the German Wikipedia cooperates with the German National Library which is working on the GND. Wikipedia has a page where users can report errors in the GND so that the library employees can correct them (http://de.wikipedia.org/wiki/WP:PND/F).
Unfortunately, I'm no programmer and I cannot help with drawing this pile of data to Wikidata. But I think the Wikidata staff should put this item on their agenda.
Yours, Jonathan