Amazon announced the 19 Days of Deals post-Cyber Monday. Here are some of the discounts on Blizzard PC Games:
These below are not part of the deal, but as a reminder (if you haven't yet) pre-order World of Warcraft: Mists of Pandaria, StarCraft II: Heart of the Swarm, Diablo III and/or the Diablo III Collector's Edition. Don't forget to select the "Free Super Saving Shipping" option at checkout.
If you have World of Warcraft, get Diablo III free by upgrading to the World of Warcraft Annual Pass (requires credit card, but it won't be charged).