How good is Halloweentown? So good that there's an annual festival celebrating Marnie learning all about her spooky heritage. This is one Disney Channel original movie that continues to resonate with fans, and if we had to guess why, it's because of Marnie's pure love for Halloween. Marnie's 13th birthday revelation that she descends from a family of witches is met with pure joy, and her enthusiasm at seeing supernatural creatures lead normal lives in Halloweentown made us all want to be her best friend.