I was messing about with Halo 3 today, just trying a few things out, and then I discovered that I had unlocked ALL armour, even the ones which arent available to us regular folk (such as Recon and the Flaming Helmet).

I had an idea of how I had done it, so I rushed over to my friends house and tried it again (recording it this time), and it worked.

I would release my gamertag so you can battle with me, but I'm afraid Bungie and/or Microsoft would suspect me of hacking, and for that reason my gamertag will remain confidential. (less info)