Yes, over HDMI and VGA.
It doesn't over component. There's actually a handy little chart somewhere on xbox.com that shows all the possible resolution combinations.
That is weird because when I put a DVD on my (composite 1080i connected) 360, the screen swith to 576p mode (??).
Evan Wells (Uncharted 2): I think the differences that you see between any two games has much more to do with the developer than whether it’s on the Xbox or PS3.