Elf is a useful option for intermediate learners who want natural English without jumping into something too difficult. With the dialogue moving at a natural rhythm, viewers should catch most of it, although a few moments may still be challenging. The vocabulary is not overly technical, though it includes enough variety to make the practice meaningful. Also, jokes, quick reactions and casual exchanges are a regular part of the dialogue. Because the plot is fairly straightforward, learners can focus more on the dialogue than on figuring out the story. If your English is close to B1/B2, Elf can be useful for getting used to faster spoken English.