What's The Dark Crystal?

Imagine if the main guy behind creating things like Sesame Street and The Muppets (Jim Henson) was suddenly given a blockbuster-level movie budget and carte blanc to do as he pleased, and used them to make a rather slow, incredibly immersive fantasy movie about the dichotomy between light and dark, etc. It's obviously an older movie, but it aged at least as well as movies like Labyrinth (which I believe he also had a hand in). Worth a watch, especially if you've got younger kids around to watch it with you.