"humane" query editors for the data web?

Hi all,

Admittedly this is somewhat of a tease and shameless self-promotion :-) 
but I think there are a few interesting concepts in the query editor for 
Freebase that I've been working on that can be very useful for querying 
and consuming LOD data sets:

    http://www.freebase.com/app/queryeditor/about

Or maybe I missed it totally--is there anything similar for writing 
SPARQL queries over LOD?

Cheers,

David