I'd love to set an ethographer loose on this, and see what insights they have about how programmers and programming works. Might make a nice PhD thesis for someone :-)
There have already been a bunch of academics studying the version control histories of major open source projects, for example as a means to gain insight into why open source development "works" (i.e. is able to produce very high-quality software). One of the cool things about studying an OSS project is that everything is public, and the vast majority of the communication happens via an archived, digital medium: you can correlate VCS history with mailing list activity with bug tracker activity with website traffic logs, for example.
