If you're a fan of soapy, sentimental shows with a dash of sexiness, "Firefly Lane" is for you. Featuring some de-ageing magic on Sarah Chalke and Katherine Heigl, the series goes back and forth in time to tell the story of how Kate (Chalke) and Tully (Heigl) become best friends in their younger school days and navigate troubled romances and steamy affairs together over the course of decades.