Assuming you haven't spent the entirety of your last paycheck putting together that "Sexy Occupy Wallstreet Protestor" costume that you've been bandying about in from Halloween party to Halloween party all weekend (I guess it's kind of clever), you may want to bust out your debit card for this awesome Amazon sale that's going on this very second.
The sale, which is running from now until EOD November 5th, is pretty simple: buy two games at full price, get the third one absolutely free. That means Batman: Arkham City, Ico and Shadow of the Colossus HD, Gears of War 3, Dark Souls, Monster High: Ghoul Spirit... pretty much every triple-A game to grace consoles this year so far.
Also, if you're not into the whole "paying for games at full price," thing, Amazon's also selling Rockstar's LA Noire at half-off. And you thought you were safe.