"Mystery" solved. I wasn't sure who they were, but I sure as heck didn't come up with some huge conspiracy theory like some did. Methinks some people just have too much time on their hands...

"The three men in the photo, said White, are members of Microsoft's anti-piracy team who worked on the Vista holograms. Other images on the disc -- Kwisatz said he had found three others, but couldn't make out details -- are art masterpieces in the public domain, added White."