My Neighbor Totoro. It hold such a special place for me. My grandma is from Japan so as a kid she'd get all this anime and Ultraman bootlegs for me. So when she got Totoro I just fell in love with it and watch it all the time. Even though I didn't know Japanese I was able to know what was going on and still get the full experience. My honorable mention though is Princess Mononoke, just another great Ghibli film.