The Dutch Public Broadcasting (NPO) offer HbbTV in the Netherlands. But HbbTV is blocked by the three largest televison providers in the Netherlands. Nationwide is HbbTV available via Digitenne or Satellite.
Further info: http://www.totaaltv.nl/nieuws/15365/meer-zenders-bieden-hbbtv-aan.html
Author: Jarco Kriek, Totaal TV