Wikidata supports many more items than any Wikipedia has articles and as our objective is to "share in the sum of all knowledge", it is obvious that Wikidata has added value. 

Thanks to the latest hack by Magnus, it is now possible to include Wikidata in your search result. I blogged about this [1].

When you are interested in this functionality as much as I am, add 

to your User::YOUR_USER/common.js.

On the English Wikipedia add 

importScript('MediaWiki:Wdsearch.js');

You can further improve the results in your language by adding labels in your language on the items that matter to you in Wikidata.

Thanks,

       GerardM

[1] http://ultimategerardm.blogspot.nl/2013/11/divcon-valerie-sutton-found-on-occitan.html