Alright, so apparently, I was reading a website talking about one of the big events of gaming this year. One of those events concerns Geoff Keighley promoting Halo 4 with Mountain Dew and Doritos. So what's so important about this picture, and what's the story behind it?
I missed this, obviously. I barely pay attention to gaming journalism of this kind, so what's so famous about this picture? Why does it matter?