To answer the obvious questions, yes, I've seen a lot of the game. Yes, it's amazing. No, I can't talk about most of it (I'm NDA'd). But I can say (because this feature has been discussed) that the one thing that completely blew me away (aside from the graphics, animation, level design and new vehicles and weapons) was the ability to record a game and play it back on Xbox Live, freezing the action at any point and flying around the scene, Matrix style. It may sound just like a standard replay function, but take my word for it, it's not. I think it's revolutionary, and I predict that Halo 3 will take machinima to a whole new level.