Movies like Labyrinth, Willow, Legend, Last Unicorn, and Ladyhawke all rank high on my special list, because I fell in love with them as a kid, and I think that viewing them at that age imbued them with a warm fuzzy nostalgia as well as an extra dose of magic. Although Willow is a little too knowingly goofy to have that magic, I still enjoy the heck out of it, and own all of them on DVD.
I remember back in '98 I developed an insane hankering to see Labyrinth again, but no video store had them, nowhere could I find it. I pestered my friends and family for sightings of a copy. So notorious was my desire for this movie that I ended up with three copies of it when it finally came out on DVD in '00 or '01. One from my Mum, one from my college roommate, and one from my BF. I was quite scared to watch it, because obsessing and not-getting for two or three years can build up a lot of expectations!
I love that movie to itty bitty bits, even the scary grey tights and the fake baby.