I've been around the web a few times, and have yet to see one article that has every single trailer from the VGAs in one spot.  That said, I wanted to make a post that has every single trailer from the VGAs in one spot.  So, here it is.  You're welcome.

a game that we're calling "Batman Arkham Asylum 2"

True Crime

Tron: Evolution

Deadliest Warrior: The Game

UFC: Undisputed 2010

Star Wars: The Force Unleashed II

Prince of Persia: The Forgotten Sands

Spec Ops: The Line

Crackdown 2

Green Day: Rock Band

Medal of Honor

Halo: Reach