Sometimes perverse, always fascinating, Australian independent filmmaker Mark Dooley’s “Repeat Attenders” explores the personalities of obsessive musical theatergoers. Cutting between half dozen subjects, for a solidly composed, seemlessly engaging 100 minutes, Dooley examines a wide range of musical theatre obsession, from benign fandom to life-shaping phenomenon. Sally, from north of London, has seen the West End production of "Les Misearbles" 977 times: “It’s an obsession”