Coming in at nothing short of amazing, BioShock is by far one of the greatest games of all time.
There is no real need to do a full detailed review of this title, I think the professional reviews say it all, BioShock is one of the best games ever made, that is a flat out fact. The best quote I've seen to explain this is "BioShock is to FPS games, what Super Mario 64 was to adventure games." And it's absolutely true. This game will go down in history next to games like Super Mario 64, Ocarina of Time, and Final Fantasy VII.
No matter what type of gamer you are, if you enjoy good games, hell if you enjoy AMAZING games, you must buy BioShock, not rent, not try at your friends house, BUY BioShock and show support for this amazing Dev team who has gotten shafted in the past by less than stellar sales of equaling amazing games.