Commodities - what and how to invest?

Based on my analysis presented in my Market Commentary blog we are looking at 5 or more years of subdued growth and stable asset prices, or a precipitous shakeout of asset market and credit liquidation culminating in a rapid transition to economic growth, though a calamitous shift in wealth from those with asset or liability exposure to those with cash. The question is:
1. Does the Fed have the skills to maintain a flat market for 5 years?
2. Will global markets be exposed to exogenous factors that might impose instability, eg. bird flu?

Does it not strike people that the safe option is to avoid assets. But under this scenario, where do you put your cash?
1. Cash - the problem with cash is that it makes you no money
2. Gold bullion and other precious metals
3. Gold 'derivatives' that offer exposure to the gold market. The problem with financial instruments like these is that you might not be safe from a failure by the counterparty or market maker. Best to avoid these products.
4. Gold stocks offer the best exposure since you dont just have a fixed exposure to the physical metal, but exposure to a growing inventory of metal, as long as the stock is producing or close to production. The benefit of this is that you have the opportunity for the market to price in long term high gold prices and such an extrapolation can blow out your capital gain. There are several things you should look for - unhedged production and the ability to scale up production.
5. Gold exchange traded funds (Gold ETFs) offer 2 types of exposure. Some buy physical metal, others buy stocks. Equity funds can target emerging producers or blue-chip exposure.