The Harry Potter books are filled with easter eggs that even fans who read the books countless times (such as myself), might have missed or overlooked. Building the plot for 7 books in a way that makes complete sense is such a challenging task, and although Rowling still has some missteps and plot holes that are hard to ignore (that can be an entirely new thread, stay tuned), she still did a fantastic job in tying the plot together in ways that still feel new and exciting even if you are on your 20th readthrough.
Admittedly, I was not yet a fan of Harry Potter when the books first came out, so I do not know what discussions went on whenever fans caught on to a certain easter egg or clue. But I definitely enjoyed reading through this discussion on Reddit about facts that might have been overlooked by most fans. And if anything, it made me want to go back and reread the books all over again.
Scroll down to enjoy the interesting discussion yourselves. After that, click here for a magically hilarious collection of Harry Potter memes.