The Halloween Tree is a 1993 animated movie based on Ray Bradbury's novel by the same name. I remember when both came out, and I thought the novel was adapted nicely for the film. The film has fewer kids and one of them gets to be a girl. The kids loved the movie, and we picked up the VHS as soon as it was available. Sadly, it's never been released on DVD and our video tape is in bad shape. We've had it transferred to DVD but would dearly love a professional DVD production of this movie. I can't imagine why this wonderful Halloween show is out of print.
Ray Bradbury serves as narrator, and Leonard Nimoy voices Moundshroud.
part 1 at youtube:
The rest of it is at youtube in sections, available from several different users.
10/3/2008: This is still incomprehensibly unavailable on DVD, but we watched our copy again tonight. An annual tradition, we would give a lot to have a DVD of this commercially available.
10/10/2009: The Husband picked this to watch tonight. It's still unavailable on DVD.