Bioshock is great but I always hate how it downloads "a patch" when it's installing when it's really just the exe for the game.
I think it was a horrible business decision to implement such DRM but regardless I still think the game is worth purchasing (especially at the price it is now), it has several flaws (including an extremely severe case of console-itis, A.K.A. dumbing down games for the wider console market) but it's still a great game.
I'm not too psyched about Bioshock 2 because I don't know how well 2K will be able to handle it, 2K is a really shitty company and Bioshock 2 is not even being handled by Irrational (now called 2K Boston or something).