Marc "Babaloo" Mandel (born October 13, 1949) is an American writer. His writing credits include the television series Happy Days and the movie Night Shift. He is the long-time writing partner of Lowell Ganz. Mandel was born in New York City, the son of a taxi driver. He has six children, including a set of triplets. Mandel and Ganz were featured in "The Dialogue" interview series. In this 90-minute interview with producer Mike DeLuca, Ganz and Mandel discuss their 40-year partnership as it evolved from television to feature films.