As J.K. Rowling's Harry Potter series has become increasingly dark and complex, filmmakers tackling the source material have found it more challenging to present the stories without compromising the integrity of the novels. This prickly problem first reared its head with 2004's Harry Potter and the Prisoner of Azkaban, the first film in the series to meet with angry rumblings from some Potter-philes. The fifth and newest installment, Harry Potter and the Order of the Phoenix (henceforth OoP), faces the biggest challenge ... Read on, Daddy-O