Give your お気に入り dialogue from your お気に入り character. It doesn't have to be from the books, can be just from the movies.

My absolute お気に入り is Harry. These aren't in any particular order.

1. Hermione, when have any of our plans ever actually worked? We plan, we get there, all hell breaks loose.
2. I don't go looking for trouble, trouble usually finds me.
3. あなた know me...I like the quiet life.
4. The poor toilet's never had anything as horrible as your head down it...it might be sick
5. My eyes aren't glistening with the tears of my past!

In book 7 at the end when Harry enters Hogwarts and one of the Carrows spits at Professor McGonogal. Harry says "You shouldn't have done that." and uses the Cruciatus curse on him. When McGonogal tells him that was foolish.
Harry says "He spat at you!" ..

That's my お気に入り part ever! Not sure exactly why.. maybe cuz it shows us the respect and loyalty for her that Harry possesses which we didn't realize he felt so strongly about until now -- ... just seems very "gallant", to use McGonogal's words.