http://diablo.incgamers.com/forums/showthread.php?824402-Diablo-III-FULL-RETAIL-BY-BLIZZARD-PRE-DOWNLOAD
Those are the links for the installers by region. The EU English and German installer links have changed since then however so if you're in those regions check out blizzards site for those links.
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http://i.imgur.com/H7Tbg.jpg
http://card.psnprofiles.com/1/CaptainRockman.png