When Good Ghouls Go Bad (2001)
Director: Patrick Read Johnson
Writers: R.L. Stine (story), Patrick Read Johnson (teleplay) & John Lau (teleplay)

A new kid in town must drive away ghosts with the help of his zombie uncle. When Halloween decorations begin to mysteriously disappear around town, the boy and his reanimated uncle join forces to find out who is behind the attempt to destroy the residents' enjoyment of the spooky holiday.