According to Joystiq.com, "A reliable source within a major film production company has told Joystiq that the two have been getting along famously, with a movie adaptation of 2K's successful franchise already being discussed by the Big Daddies internally."
The site adds, "The studio hopes to bring the fallen aquatic utopia of Rapture to celluloid life through extensive use of green screen technology, an approach not dissimilar to Legendary Pictures' interpretation of 300. If the computer generated approach is deemed feasible and fitting, the focus can then shift to capturing BioShock's secondary (and uninhabited) characters."
Not too many CG movies are done well, but if this is done correctly, I think Bioshock has the potential to be an amazing movie. I mean, if Bioshock: The Game can compete with Halo 3 as game of the year, then maybe Bioshock: The Movie can compete with Spiderman 5!