Sorcerer's Stone - Hermione after she, Ron, and Harry meet Fluffy: "Not, if you two don't mind I'm going to bed before either one of you come up with another plan to gets us killed, or worse expelled!"

Chamber of Secrets - Ron after he and Harry make it out of the forest: "'Follow the spiders. Follow the spiders.' If Hagrid ever gets out of Azkaban, I'll kill him!"

Prizoner of Azkaban - Hermione punching Malfoy (PRICELESS!!!!)

Goblet of Fire - The Yule Ball (Beautiful!)

Order of the Phoenix - Harry and Cho kiss scene and any scene with Luna.