This week only for Gold members, the hit indie game Bastion is now 600 Moon Bucks on Xbox Live (soon to be $7.50 people money?). If you don't have a 360 you'll be missing out on this deal, but Bastion is also available on Steam, and in Google Chrome.
If you haven't picked it up already, I'd highly recommend doing so. It's a fun 4-5 hour romp through an incredibly colorful world, and it really brought back flashes of Secret of Mana for me personally.
While it isn't the most challenging game, it has enough content to justify the price, and it has friendly leaderboards for all you competitive types out there. For those of you who have played Bastion, I have a question for you: did you also get tired of the narrator after five minutes?