Trivia: Tommy has been more colours than any other Ranger. He has been the Green, White, Red, and Black Ranger.
Trivia: Portions of every episode are from a Japanese version of the show. Almost every episode in series 1 was two thirds Japanese footage, just voiced over. Saban used this Japanese footage to save on filming its own.
Trivia: Actress Thuy Trang, the original Yellow Ranger, was unfortunately killed in a car accident in September 2001 in San Francisco.
Trivia: The reason why Tommy was used sporadically as the Green Ranger was because in the original Japanese show, the Dragon Ranger was living on borrowed time and had to conserve his power so he wouldn't die. There weren't many action scenes that included him but he often arrived to aid with the Dragonzord against the giant monsters.

Trivia: Walter Jones (Zack the Black Ranger) is missing his left middle finger. If you look closely you'll see it missing at various times throughout the show. Particularly when he morphs (he's the only one that only has three fingers on top of the morpher).
Answer: According to the IMDB, there are currently 10 different series (with an 11th premiering in 2006). And, as far as I can tell, there have been only two theatrically released movies. All of the series, with the exception of the first one (that premiered back in '93) are spin-offs of the original, and they all share similar plot lines, characters, etc.
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