I was a commodities broker for a period of time in 1996 and 1997, was a tough slog making ocld calls and all, but my clients cleaned up big in a corn ralley that year. Silliest thing too, makin gmoney off speculative market moves and weather changes, crop reports from brazil during our winter...
Basics of supply and demand drive the market.
I dealt with Options exclusively...there is more money to be made/lost in commodites than any sports or stock market!