Gears of War: Judgment then. Word is it's been pirated, a month before release, and can be downloaded right now from the wilderness that is the internet (given access to a modified console and a basic lack of scruples, of course). Do that, however, and you'll tempt the wildly chainsaw-swinging wrath of Uncle Microsoft.
"We are aware of isolated cases in which Gears of War: Judgment content has been propped on the Web and are working closely with our security teams and law enforcement to address the situation immediately," the manufacturer has commented to CVG.
I played Judgment the other day and found the campaign to be decidedly impressive. I've played the multiplayer mode OverRun, too, which is also decidedly impressive - more on that front soon.
A series of Judgment hands-on "lock-ins" are currently underway at specialist retailer GAME - secure a slot, and you'll get to spend a whole evening with the game, plus free snacks. Read this to see if there's a participating store in your vicinity.