With Harry Potter And The Half-Blood Prince opening next Wednesday, it's time to prove your mettle.
I'm not always a big fan of quizzes, but I like this one, because it backs up the great majority of the answers with relevant clips, and because it boasts a nerd-friendly 25 questions, cutting down on the likelihood that a pretender will manage a strong score by guessing.
(Not that I tried to do this. At all.) (And not that it ended in disaster when I got ten questions right.) (None of that happened. You didn't even read this paragraph.)
Feel free to report your score and claim your bragging rights. Or, in the alternative, show off how good you are at guessing.