Halo 3 is going to be huge -- but how huge? How does 72.6 by 53.6 feet sound?
If you reside in San Fransisco or New York, I strongly recommend you try to attend the "First to Play / First to Own" event. The event is going on on September 25th. For Halo 3's launch, gamers will have a chance at playing the game on the IMAX screen.
The event being is sponsored by Pontiac, and you if feel like trying your luck, you can enter your name into their info-banks for a chance to win a pass to the event. Here is the link: http://www.pontiac.com/halo3.