Chapter Four of the Half-Assed Parody, a chapter-for-chapter satire of "Harry Potter and the Half-Blood Prince."
"Chapter Four: Slugustus Gloop"
Oh Horace Slughorn. What a douche. Except in the movie. I love that bit with the fishbowl. In the book everybody just says "Oh, Lily was so smart. Really. Trust us on this," but the movie in one of its few saving graces gave us a beautiful piece of indirect characterization to illustrate how smart and sweet she was and how hard the loss hit him.