Harry Potter and the Half-Blood Prince

Trivia: Young Tom Riddle is played by newcomer Hero Fiennes-Tiffin, who is the nephew of Ralph Fiennes, the actor who plays Lord Voldemort, aka Tom Riddle.

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Trivia: Marcus Belby actor Robert Knox was stabbed to death outside a pub in England shortly after completing principal photography. He died protecting his brother during a fight, and the killer was convicted in 2009 and sentenced to a life term in prison.

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Trivia: When Harry and Ginny are in the Room of Requirement hiding the Half-Blood Prince's potions book, you can see the White Queen from the chess game of the first movie among all the stuff kept in that room.

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Trivia: Christian Coulson, who played Tom Riddle in the second film, expressed interest in returning for this film, but David Yates felt Coulson was too old to convincingly play the role again. Ironically, Coulson was "too old" to begin with, being almost ten years older than the age group Chris Columbus had set for auditions.

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Trivia: In the Room of Requirement, opposite the Vanishing Cabinet, stands the bewitched harp from Fluffy's chamber in Harry Potter and the Philosopher's Stone , which was used by Professor Quirrell to put the three-headed dog to sleep over the trap door.

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Trivia: The scene where Harry and Ron are taking the Hogwarts Express back home was actually filmed in Norway.

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Trivia: The final model of Aragog that they slid into the grave weighed about 3 quarters of a ton.

Trivia: This is the only movie in the Harry Potter series to be nominated for the Academy Award for Best Cinematography.

Continuity mistake: In Potions class, when Hermione stands before the cauldron explaining what she is smelling in her closeup, we see Neville behind her with the broad space to his right (viewer's left), just as she says, "Spearmint toothpaste". In the instant cut to the wideshot, Harry is now shoulder to shoulder with Neville, too fast for him to suddenly be standing that close to Neville. (00:34:35)

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More mistakes in Harry Potter and the Half-Blood Prince

Hermione Granger: She's only interested in you because she thinks you're the Chosen One.
Harry Potter: But I AM the Chosen One.

More quotes from Harry Potter and the Half-Blood Prince

Question: Instead of using the Pensieve to view Voldemort's and Slughorn's memories, wouldn't it have been much easier for Dumbledore to simply tell Harry of his first meeting with Tom and Harry simply asking Slughorn what he knew?

Answer: The purpose of the Pensieve is to preserve the memory exactly as it was recorded. Telling Harry something years after an event occurred is not as effective or as accurate as seeing. It is more impactful if Harry can watch events exactly as they unfolded. Regarding Slughorn, he had refused to give his complete memory because he was ashamed of the unintentional part he played in Voldemort's plan to create the Horcruxes. He was duped by Riddle, but he still did not want anyone to know how foolish he was.

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Answer: Dumbledore went to great lengths to recover the modified memory from Slughorn and convince him to return to Hogwarts as a teacher. Asking Slughorn about the memory upfront would greatly reduce their chances of getting the rest of the memory. It was important for Harry to charm Slughorn because that was one of his weaknesses. He held Harry's mother in high regards, so Harry really was the only key to getting the memory.

More questions & answers from Harry Potter and the Half-Blood Prince

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