They're sweet and juicy, big as softballs, and more numerous than flies on a cow. They're versatile, too. You can make them into breads, cakes, salsas, jams, or chutneys. And if you know someone with a tree (and who doesn't at least have a friend of a friend?), mangoes are free all season, from spring to autumn, when mango-tree owners actually are relieved to see the last one plop to the ground. What else could you ask for from a fruit? Only that it not crack your skull on the way down.