The Nightmare Before Christmas is a fun, unique fantasy film with outstanding animation, excellent voice acting, good humor, an interesting plot, good messages and memorable musical numbers. I didn't think that Sally was as well-developed as she should have been, and her relationship with Jack wasn't as heartwarming as it could have been because of that. The musical numbers are dark yet fun, and I'd be surprised if anyone didn't sing along with at least one of them. The Nightmare Before Christmas is one of my favorite animated films, and it certainly holds up almost twenty years after it was released. Definitely check this one out if you haven't already.