Open Tesco?
Tesco may not be a name that means much outside the UK, but the fact that this huge retailer is selling GNU/Linux-based systems - some for as little as £140 (without a screen) - is pretty significant. After all, it's not hard to imagine lots of people seeing the price tag and buying one without really noticing that it doesn't have Windows, discovering that it doesn't matter that much (aside from games). (Via 451 CAOS Theory.)