Disney's dazzling "sequel" to "The Wizard of Oz" has young Dorothy coming back to the Emerald City and finding its famed inhabitants under the spells of the evil Nome King and Princess Mombi. Helping Dorothy in her quest to free the city are new Ozian pals Jack Pumpkinhead, clockwork man Tik-Tok and Billina the talking hen. Fairuza Balk, Nicol Williamson, Jean Marsh star. 110 min. Widescreen (Enhanced); Soundtracks: English Dolby Digital 5.1, French Dolby Digital stereo; TV spots; theatrical trailer.