BioShock Headed to the Big Screen?

Joystiq is reporting that a "major film production company" is in discussions with 2K Games on the possibility of producing a movie adaptation of BioShock.
Digging through all the praise heaped upon BioShock, you're sure to scrape your nails across several repeated phrases such as "engaging," "gripping" and "atmospheric." Some have even said it's "pretty good." The most common one, however, is sure to be "cinematic," a term that places BioShock and Hollywood in rather close proximity. 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 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.