Trivia: This was the first episode where the Rangers take their helmets off in the Command Centre.
Trivia: At the time of writing, Tommy is the only Ranger to of been two different-colored Rangers in one series, having been the Green and White Ranger in series two.
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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