The practice of dining on insects.
According to a recent article posted at The Economist.com, the practice of dining on bugs is common in over 100 countries with insects providing more nutrients than beef or fish (gram for gram, that is). Oddly enough, feasting on insects also makes good ecological sense: bug consumption has little environmental impact and insect dining can even help bolster crop production. To that end, the Thai government encourages its citizens to collect and eat locusts to protect local crops and even distributes recipes for how to cook the insects. More info on bug cuisine and cricket farming in the Khon Kaen area of Thailand can be found at 36shots.com.