Now thorough December 16, a selection of Ubisoft games are reduced in price on Xbox Live. The standout offer here is Call of Juarez: Gunslinger, a game much better than its name would suggest. That's down to $3.74, which is impulse-buy territory for me.
Elsewhere in the sale, there's titles like Outland ($2.49), Scott Pilgrim vs. The World: The Game ($2.49), Cloudberry Kingdom ($2.49), Beyond Good & Evil HD ($2.49), From Dust ($3.74), and Rayman 3 HD ($2.49). Some great deals to be had if you're missing any of these titles.