So as you can tell we are excited here, Bungie released a behind the scenes making of the Halo 3 describing all of their thinking on its creations, they spend alot of time talking about the graphics engine and then another good portion on the music. Its really well made, and you just might see some fimiliar faces from the Halo 2 DVD.
Anyways Bungie has placed a million different size options for the video: Small, medium, large, as well as HD. They also offer both Windows Media Player and Quicktime formats for each size. Go check it out!