This past week saw the launch of “Halo 3″ — the hotly anticipated, long awaited, final chapter in the “Halo” trilogy. While I’ve never really been all that interested in “Halo”, what I am very interested in is what this means for the future of the Xbox 360. I mean, this was it… this was what everyone was waiting for. “Halo 3″ was The Big Kahuna — the Xbox 360’s killer app. If anyone had been putting off the purchase of the Xbox 360 until the day “Halo 3″ launched, Tuesday, September 25, was it.