To some folks outside of Microsoft, the Open-Source Software Lab has been a sort of mysterious place. A place where we study Linux and open-source software, cursing our enemies while brewing our malevolent plans to combat those nasty FOSS developers. Oh, and we also have a death ray on the roof of building 17. It's Linux-powered, of course, just to add a little irony.
As you probably have guessed, the reality is that the OSS Lab is just a room full of servers, used by engineers who just love to work with technology. Much of what we do is research, testing and of course there is an educational aspect as well.
Check out this posting for more information - http://port25.technet.com/archive/2008/03/20/inside-the-oss-lab.aspx