At the end of the co-operative campaign, GLaDOS scans lots of people in cryo-sleep. The names of the people appearing on the scanner's screen are the names of the developers, actors and other production staff. Also GLaDOS reads aloud - mostly negative - information (e.g. "horrible people-skills" or "never shares"), seemingly from each of the scanned persons' files. At the end of the credits, GLaDOS says that it was all from just one(!) file and that she will now look at some more.