Prisoner of Azkaban (many spoiler warnings)

Like most people, I was excited about this film far more than either of the previous two; PoA remains my favourite of the five books (closely followed by GoF) and I was particularly looking forward to what Cuaran would do with it. It's a good place to change director; the point at which the books stop being adventures for primary schools and start unfolding plot and characterisation in new and complex ways.

( I was not disappointed. )