Book : Half Blood Prince, because that's when the relationship of Dumbledore and Harry comes in a full circle. That's amazing. The bond strengthens and Dumbledore finally realizes that Harry is old enough to fight his battles and bring peace to the world.
Part(s) : The bonding of Harry and Sirius. Harry is known to be devoid of any parental love and affection. Sirius fills that post. The moment in the last scene of POA, where Harry reads the letter sent by Sirius where there's a P.S. Saying "I, Sirius Black, Godfather of Harry Potter allow him to visit the Hogsmeade village." that's when Harry realizes he has someone who cares for him, loves him like a son and would do anything, simply anything just to be together, as a happy family.
Character : Severus Snape, he is the most complex and mysterious person ever that was penned by Rowling. The character of Severus is beautifully designed and written. And the ups and downs that he has to face is heart touching. He pretends to be the worst guy but in the end, in his final stroke, his image comes out to be totally opposite. He seems to be strong but in the end its proven that he is as weak as any regular person. He pretends not to have any feelings. But in the end the truth comes out that he is the one with the deepest and most beautiful feeling any individual can have and that is LOVE. He loved Lily all his life and may after his life too.
I'll try to be : Hermione Granger , she's cool, strong and smart enough. Hermione is the smartest girl I ever read about. But the only downside is I'm not that weepy like her. I seldom cry, quite opposite to what Hermione was. Other than that I am totally like Hermione. When my best friend who is also my cousin, first read the HP Series, he called me and said, "I finally found you in the pages! See Hermione and see you". That's what he said. I love Hermione and I totally love Rowling for creating such a wonderful character.
Candy : Treacle Tarts. I know it comes under the category of desserts but I'd love to have them.