Definitely one of the best homage type easter eggs I've seen in a game.
http://cloud-4.steampowered.com/ugc/566646340386318450/F47EDAF6ECD6E62F9528A705288E9DD7DBB86CEA/
Yeah, it's fantastic. I don't remember exactly how Steelbeard described it, but he got it during "the year where something something". Too bad I can't remember what the something something was, as it might be another easter egg.