in 1973 and 1973, most of the actors from Star Trek were reassembled to make an animated version of the show. Season One had 16 episodes and Season Two had a further 6.
This was between the finishing of the original series (1969) and the making of the first movie (1979).
I had seen bits and pieces of the series over the years but when it appeared on Netflix I decided to watch all of the episodes.
Well I find this very hard to believe, but there is hardly a single episode in the whole series which has even the slightest merit.
IMDB rates the episodes between 6.1 and 7.4, with the single exception of the second episode, “Yesteryear”, which has a rating of 8.2.
This episode was written by D.C.Fontana and features time travel and “The Guardian of Forever”. The episode also sees Mark Lenard reprising his role from the original series as Sarek (the only time he did so in the animated series).
Here is a still from the episode showing Kirk and Spock: