>> ...the immersion and atmosphere in Doom 3 match that of System Shock perfectly.
>That is so, so wrong!
I don't think it's wrong at all. System Shock 2 is my favorite game ever (closely followed by the thief series and Ultima Underworld), and I think Doom 3 is excellent. It's easily the most immersive game experience I've had in a very long time.
The thing both Doom 3 and the Looking Glass games have in common, appart from being great games, is they make excellent use of environmental sounds. I wish more games paid as much attention to sound design.