The Environmental Working Group and ActionAid have collaborated to create an interactive world map highlighting countries at highest risk of a food crisis due to the recent food price hikes.
These organizations emphasize that biofuel production and trade policies have contributed to increased demand for crops like soybeans and corn which, in turn, has put pressure on the prices of these and other major food staples. Go here for the interactive map (below is just a screen grab):

Data was compiled from the Food and Agriculture Organization (FAO), the International Food Policy Research Institute (IFPRI) and the World Bank. You can click on three categories to see where citizens are suffering the most in response to near-record prices for commodities (corn, soybeans, wheat and rice). Many countries rely on these as basic food staples.