ESPN aired the
Halo 3 trailer at 9:10 EST and it was pretty damn sweet. I don't think it's in game footage but it's pretty sweet none-the-less. I'm not going to ruin it because it's going to be up on Xbox.com later tonight at 8:00 PST (and hopefully on Xbox Marketplace soon). It's really good stuff but don't expect a long trailer with a lot of details.
Update: The trailer is now
online.