If time-worn expressions like “time heals all wounds” and “laughter is the best medicine” had a baby, it’d be Marlon Wayans’ new special, “Good Grief.” In the special, which is part love story, part roast, part therapy session, Wayans is effortlessly vulnerable while sharing stories about his upbringing and the unbreakable bond he formed with his parents, Elvira and Howell, …
