Magazine to create a map of a fictitious land called "Westeros." He knocked out his assignment in short order and moved on to the next project without giving it another thought. That is, until just recently, when his current Art Director complimented him for being the creator of one of the most famous mythical maps ever. He had no idea.
Anyway, if you're one of the CBers who gets these references and thinks this is cool, you should be ashamed of yourself.