Yeah, looks like the most popular titles, like the Halos and whatnot will be 100% compatible with BC for the system. I'm sure that as time goes on, they will have found workarounds (dealing with the proprietary nature of the some games' coding to nVidia hardware) for almost all the games...probably all of them at some point...and will update regularly via Live and probably even demo disks and game software.
Ummm...yeah, Shogmaster said it. :lol