Whenever women make lists of the movies they could watch anytime, Dirty Dancing often floats close to the top. This week the 30th anniversary of the release of the 1987 hit-that-almost-wasn’t. There’s little that’s subtle about the plot: Doctor’s daughter and all-around sweetheart Baby Houseman, vacationing with her family in the Catskills circa 1963, falls in love with working-class diamond-in-the-rough dance instructor Johnny Castle.