It is time for me to come clean. I love the Harry Potter series. Love the books, love the movies. For me, the fact that J.K. Rowling is awesome is not to be disputed. I know there are flaws and I know you probably will want to argue with me, but you will never change my mind.
The little things Rowling puts in the text are just the best, which makes the Harry Potter series worth more than one reread. Here is a good example that just came to my attention thanks to @ArryPottah on Twitter:
The first time Snape speaks to Harry, he says, “Potter! What would I get if I added powdered root of asphodel to an infusion of wormwood?”.
During the Victorian era, each flower type had a specific meaning when a flower was given. Asphodel is a member of the lily family and to give some an asphodel meant “My regrets will follow you to the grave”. Wormwood meant “absence; bitter sorrow”. Thus, Rowling was actually having Snape say to Harry “I bitterly regret Lily’s death.”
While the meaning of asphodel, I believe, is a little stretched to fit the situation (as far as I know asphodel simply symbolizes regret), the statement does still have a deeper meaning to the character. It seems so simple but I think details like that add so much to a story.