Stockings ready? Wallets out? Steam's holiday sale has begun.
Right now there are sales on a whole bunch of franchises, including Hitman, Prince of Persia and many others. You can get Borderlands 2 for $US30 and all of its DLC for relatively cheap, for example.
There are also some big publisher bundles: $US90 gets you a whole bunch of Bethesda games, including Skyrim and Dishonored. And for $US70 you can get heaps of of indie games including Mark of the Ninja and Ys Origins.