El misterio de las muchachas desaparecidas

It's very British film in that the story is moved along by dialogue more than action. Because of this the viewer must pay close attention to what people are saying, which is difficult because it's not very exciting dialogue to listen to. They combine animation and live action in an interesting way, with human characters and animated backgrounds, props, and animals. It has a very interesting effect. I'd say it's worth watching once, just because the animation style is so unique (if you're interested in that sort of thing).