Twenty-six years ago, Madonna embarked on her Blond Ambition World Tour and played a series of shows so provocative the Pope himself called for a boycott. Thankfully, the director Alek Keshishian tagged along with Madge and her famous pals (Al Pacino, who knew?), capturing everything from her masturbation act onstage to behind the scenes drama with old flames like Kevin Costner. It's no wonder his documentary, Madonna: Truth or Dare, still has a cult following: Hundreds showed up to a…
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