X360 runs Halo 1/2 from day one
Come back evolved.
First of all, we've resisted the temptation to do, "Halo for Xbox 360 launch", so how about some biscuits? Second, according to numerous reports based on Microsoft's recent show-and-tell tour of the American tech-and-games-press circuit, Xbox 360 will launch with legacy support for Xbox titles Halo and Halo 2.
Microsoft's Peter Moore said at X05 that some Xbox 1 games would be backwards-compatible at the launch of 360, and said, "We will probably be in a position in about two weeks to give you a list," which means we can probably expect one either this week or at least soon.
That Halo and Halo 2 are on the list is about as surprising as another viral marketing campaign, but there you go. We'll let you know when the rest of the list's confirmed.