i can't count how many times i've seen tv chefs make a syrup out of orange and lemon juice and zest, a cuppa sugar, and even an herb like sage in a frying pan, then tosing in the fruit of the season. oh, and a flambe' of the ubiquitous high alcohol content liquor like rum often follows.
grilling fruits can be tricky because you can burn the sugar. but if done at a low enough temp, then drizzled with honey or sprinkled with brown sugar, they're delicious. pineapple, pear, and peach are my faves.