Windows Media Video teaser trailer of Halo 2, the upcoming Xbox game sequel coming out in 2003. You might be required to download Windows Media Player 9.
Eighteen minute long Halo 2 gameplay video from a recent multiplayer demonstration (using the Zanzibar map) at the Seattle Downpour event. Recorded by MLGPro, in Quicktime format.
This is a high-definition version of the Halo 2 trailer currently showing in theaters. Note that this is a high-definition WMV movie, it needs a pretty beefy machine.