Basically, we're in the end stage of a massive, thirty or forty year credit and monetary expansion. The U.S., and consequently the rest of the world, are locked into a fiat currency blowout. Regardless on how dramatically that resolves itself, both gold and silver will do very well. History is littered with fiat currencies and they always end, usually with a parabolic expansion of the currency, loss of faith, and devaluation. Wealth returns to traditional stores of value, such as precious metals.
So yeah, gold and silver are the biggest no brainer, and potentially best, investment in a long time. Buy physical as much of possible, at least as a core position. GLD and SLV are potentially shady, and I would look more at trusts like GTU, CEF, PHYS and PSLV if you want ETFs. Hold until the shit gets wild and sell during the crazy, volatile blow off top at the end of the bull market. Put the money in real estate, arable farmland, etc. But we're still a ways from that, apparently. The financial oligarchs seem remarkably effective at holding this house of cards together.
The preceding is solely my opinion, and should not be taken as investment advice, or even as a suggestion that I have any idea what the fuck I'm talking about. Seems pretty obvious though.