That's really sad that most of you guys only judge how good a game is by its graphic quality, even before you've played it. How about reading some of the reviews first, or waiting until the PC demo arrives tomorrow?
http://www.metacritic.com/games/platforms/xbox360/bioshock?q=bioshock
http://www.metacritic.com/games/platforms/xbox360/bioshock?q=bioshock