Other mistake: The Tigerzord has various orbs behind the White Ranger, that give the Tigerzord various abilities. The only one we ever see used is the one for a Fireball. For the rest of the series, this orb disappears and reappears, whether the Fireball has been used or not.
Other mistake: When Tommy is ambushed by the putties, he kicks one which explodes despite the fact that the Z on the puttie's chest never glowed white like they always have in previous episodes.
Zedd Waves - S2-E26
Other mistake: After the shot changes from Zedd yelling at Goldar to Tommy, Kim, and Billy in the park, for a brief second, you can see the three actors were standing and waiting for the cue to begin walking; most noticeably with Tommy who puts a little jump into his first step from standing.
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.
Cubs Fan ★