I was watching a YouTube video today that had a very short (less than 2 seconds) video closeup of a young man with glasses. Given the film-like nature of the clip, I thought it was some footage from the next Harry Potter movie, since I don't really follow that franchise all that much. I showed that part to my mom, and said, "Look! There's Harry Potter!"
She answered, "That's not Harry Potter. That's John Lennon."