I found Halo 3 to be pretty jarring from the start(jaggies, first level showed that fact off a lot), but later levels could look awesome, and I really liked the lighting and panning around in theater mode going into explosions or viewing all the effects.
I'd imagine off screen pics of it would look better on levels other than the first and second, both of which were meh looking IMO.
I'd imagine off screen pics of it would look better on levels other than the first and second, both of which were meh looking IMO.