Season 1 was okay in my opinion, but the series didn`t strike me as anything except occasionally fun to watch until "Operation: Annihilate", the season finale. That was by far the best episode of the first season... tense, emotional, compelling. Then Amok Time aired and I fell in love with the series completely. Season 2 rocks, and I really liked season 3, too. ("Spock`s Brain" notwithstanding... though it wasn`t *that* bad :mrgreen
As for the DVD sets, I don`t plan to get them now, since I have almost all episodes recorded on video and the Curse of the Freezing DVDs is floating above me for years. But one day... of course. :mrgreen:
(though I hear a new digital media format, far far superior to DVDs, will emerge in a few years...)