Like everybody else, Blizzard decided to launch a sale and slash the prices of Diablo III, StarCraft II and World of Warcraft: Cataclysm.
Diablo III used to be $59.99, but it's currently $39.99. Worth it when you can get Torchlight 2 even cheaper? Probably not, but worth considering if you can't get enough loot.
World of Warcraft: Cataclysm usually costs $59.99, too, but you can get it for $29.99 right now.
Last, but least you can get StarCraft II: Wings of Liberty for $19.99 instead of the usual $59.99, so you can be prepared for the release of StarCraft II: Heart of the Swarm. The new game launches on March 12, 2013, which was revealed last week.
There's no mention of when the sale ends, but you can check it out here.