Yeah, already half way through SS2 by now, really enjoying itYou might like to know that there is also a System Shock 2, so don't relax yet. Superb games, both.
I saw both of these games as Sci-Fi mirrors of Ultima Underworld (1 and 2) - also superb games, and the much later Bioshock series is very much the spiritual descendant of all of those games.