For me it has been...
Kraftwerk
Been listening alot to them since I got their box-set "The Catalogue". Even if I think there's alot of fillers in their material, there's alot of good songs too.
Vince Watson
Not really a new discovery. I've been listening to Vince since 2005 or so. But I recently got hold of his early CDs which I havn't heard before except very briefly. This guy mixes detroit-style techno with minimal-techno in a fun way.
Meshuggah
Extreme/Progressive Metal from Sweden. Awesome stuff.
Thomas Köner
Re-discovering this feels like getting high again on some odderwordly music. Superb dark ambient.