Mighty Morphin Power Rangers on FOX

Tales of teens who morph into super-powered heroes have, in turn, morphed into a powerful franchise that includes a merchandising cornucopia, a feature film and various TV permutations, including `Power Rangers Zeo,' `Power Rangers Turbo' and `Power Rangers DinoThunder.' Inspired by Japanese television (with sequences from `Zyu Rangers'), it uses campy humor, martial arts and violent drama---so violent at times, in fact, that it has spurred complaints from child-development experts.