Don't know if its been said, but I loved how all the information in Dead Space (and 2 (health, ammo, inventory) were all in the real world per-se.
Well on xbox 360, Rainbow Six Vegas did allow it so that all voice chat came out of their player's mouth (with moving jaw to mimic speech).josemlopes said:-That thing with Mumble that makes the voice of the player come out of the character
Dumb example but it works
I would really like to see that on consoles.
EDIT: Better example