Pokemon The Movie: Destiny Deoxys
This movie is my favorite Pokemon movie. Why? Well, the worldbuilding for the city it takes place in is incredible, the story about cherishing those you love, Aliens. It's got everything I could want. Thankfully I got this movie earlier in my collection journey, so there are special features to talk about! This includes a trivia game, a poster art gallery, and some documentary stuff. I honestly watched the movie more than the special features on this one. I even wrote a fic about this movie once, from the point of view of the Plusle and Minun, because I love them. If I ever find it I might put it up here.