Hey folks :)
Here comes birthday present number one from the dev team. Jonas took some time and reworked the UI of http://query.wikidata.org to make it prettier and easier to understand. It also has more examples now. You can expand them on https://www.mediawiki.org/wiki/Wikibase/Indexing/SPARQL_Query_Examples. The auto-completion has also been improved. Check it out! I hope you like it.
Cheers Lydia