I remember the show, I was 11 when it first aired, they changed the music slightly, but it still began with the classic "Space, the final frontier..."
The only bad point was how cheap Hanna-Barberra were, reusing shots, cheap movement, badly drawn aliens, this hurt some brillaint episoides.
But parts of it made it into Trek lore, Kirk's middle name, 'Tiberius' is first heard in an animated episode, the concept of 'holodecks,'just to name two.
I understand the entire run is being put on DVD.