Nine/Ten/Rose Fan Video. This is one of the most well-planned, well-timed, most amazing fan videos I've ever seen. The backwards progression through their timeline is absolutely fantastic! And the song choice? This video is amazing.
If this does not become your new fav fan video, you are insane. Fetch some tissues and watch it until the end. I'm going to go into the corner of the room and cry now. I LITTERLY CRIED FOR LIKE 10 MINUTES!
The Greater Good - Harry Potter - Dumbledore and Grindelwald (This is an AMAZING 17 min fan-film of the scene between Dumbledore, Aberforth, Ariana and Grindlewald from the book!) This is well worth a watch and I don't say that lightly.