The wife and I watched a new Denzel Washington movie last night; THE BOOK OF ELI. It is a story of a man's sojourn through a post-apocalyptic, nuclear devastated wasteland. Sort of a Mad Max, I Am Legend scenario, without the virus plague aspect. Excellent movie. The point: There were numerous instances of bartering, and survival against rogue gangs portrayed, and it was very thought provoking from a "prep" perspective. No gold or silver was used in any of the situations. The number one commodity was.......... WATER Ammo and weapons, including bow and arrow, and swords and knives, were prominently displayed and utilized. Ordinary household items that we take for granted, every day, became extremely valuable to trade for water or other goods. I highly recommend all you "Survival minded" folks rent the DVD and watch it. If you have already seen it, Reply with your thoughts, without giving away the plot of the movie for those who have not seen it.