Since the request was for something memorable , and I have probably played and and DMed in thousands of games over 30+ years with many memories of gaming I went with the simpleist answer ; the game I had just been Dming 15 minutes prior to the Seminar. The DCC Low Game is a world of low magic in which inner city teenagers are trapped behind the lines of an enemy horde of which they know little about. The landscape they move through to get back to thier city is littered with corpses ,severed heads, and the atrocities that are the result of a baribaric war. What I depicted is only one of many things the players may have encountered. It occures to me I should have added flies.