Pitched between the managed revelations of Katy Perry’s Part of Me and the extended therapy sessions of Metallica’s Some Kind of Monster, Show ’Em What You’re Made Of charts the Backstreet Boys’ 20-year career, from inauspicious start (awful facial hair, backwards caps, billowing trousers), via their sudden success in Europe (we learn that the one German phrase they learned verbatim was “will you give me a blowjob?”) to globe-straddling, chart-slaying behemoths. But pop bands aren’t supposed to last, and this surprisingly frank documentary focuses on what happens when an emotionally fractured boy band grows up and deals with its past (answer: lots of crying and man-hugging). Featuring home movies and news clips of their early days juxtaposed with the jowlier, slightly haunted present incarnation, its tale of broken friendships, rickety knees, backstabbing managers and independently funded, acoustic-lead latterday albums should act as a warning to any up-and-coming boyband.

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