First and foremost, I think it is important to clarify the DVD details, because at the moment of writing this review Amazon's description does not appear to be accurate.
I am assuming, although obviously I cannot be 100% certain, that the box-set I have (a gift, and I don't think purchased on Amazon) is the standard one, so the same as sold here on Amazon: re-packaged, Region 2, 4 discs, released by CBS DVD in 2011.
Well, it happens to have:
LANGUAGES: English (5.1); French, German, Italian, Spanish (Mono).
SUBTITLES: English SDH, English, Danish, Dutch, Finnish, French, German, Italian, Norwegian, Spanish, Swedish.
COMMENTARY AND TEXT COMMENTARY SUBTITLES: English, French, German, Italian, Spanish.
The 4 discs contain 22 episodes of approximately twenty minutes each, and the following Special Features:
Audio Commentaries (only to some episodes)by David Gerrold or David Wise; Text Commentaries (only to some episodes) by Michael and Denise Okuda; Storyboard Gallery; featurettes "The Infinite Vulcan", "Drawn to the Final Frontier", "What's the Star Trek Connection?", "Show History".
All the actors from the Original Series cast, including Majel Barrett but with the exception of Walter Koenig, reprise their original roles, dubbing their characters. Walter Koenig, while not present as Chekov, penned an episode.
The animated characters are all quite resemblant to the physical appearance of the actors, apart from Scott, who looks nothing like James Doohan.
The stories themselves are good quality, overall, very similar, in tone and general mood, to the Original Series: if you liked that, you will probably enjoy this Animated Series, too. However, if you weren't a fan of Roddenberry's series in the first place, then maybe this is not for you (or in any case not the place to start your Star Trek adventure with).