hem Im a fan of PR.....and I must say after reseraching the history of the show: the show PR was based on the japanese show(okey more like series)Sentai(Task force) with a partnership with Saban and now Disney I have been watching the Japanise show for a while and I must say how a kids live action show can have so much blood!
the series sentai has quite fanbase(it has to...to survive before the years of Starwars in 1975 )
http://www.supersentai.com/ should show you the background of the Series.
And while PR is cool for me.and Last season was a blast for old fans with the return of Tommy! now as the black ranger ...and the special episode with the return of zeo ranger 5, the white ranger,and the Green ranger(with the evil laugh and the flute!)...and while transformable robot has been an amusing idea using from many years ago in animation...and still used today(tranformers energon optimus prime, Bruticus ,Constructicon maximus(aka devastator), and superion max.) and Voltron while yeah it was good this series was not a rip off of it..... basically all series are a rip off of the first combing transformable robots show.....which I do not remember which one was though...
Id ont know Pr has evolved....now it even has Matrix ripoffs.....which is not much to say anyway.next series look promising!...with the exception of the alien dog but the ranger suit makes it worth while... truly!