Boy Band Expert!
My official title, as given my Katie. When I came to class one day, she said, "Ok Annie: you're the Boy Band Expert. Who sings the song 'I Knew I Loved You'?" Of course, I instantly answered the correct answer, "Savage Garden". (Ok, so Savage Garden isn't a boy band... but Katie thought they were, and I know about all the other boy bands except the gay ones like 5ive.)
I love the "instantly answered the correct answer" part, personally.