Next-gen.com has a very interesting article about the making of System Shock 2, which is the spiritual predecessor of Bioshock. We just wanted to let you know about that article, so you don't miss it.

While you're at it: There's a 1:23 hour presentation up on video.google.com, granting an extensive look at the how Bioshock came to be and evolved during its developement. This talk is taken from the IGDA Montreal, September 11th 2007 and being held by Christopher Kline of 2k Boston (former Irrational Games).