1) Gears of War 2
We might not be getting any Brumak clobbering action any time soon, but with Resident Evil 5 not expected to amble into our trained Glock sights 'til 09, the Big M is gonna need a killer app to keep gamers happy during Christmas '08. Okay, so it's not been announced - yet - but it will happen and it'll be the focus of Microsoft's big Christmas push. Oh yes.