The Original Series (TOS) has a level of camp that people either love or hate. The original films (1-6) don't rely too much on the series, though I do recommen

The Original Series (TOS) has a level of camp that people either love or hate. The original films (1-6) don't rely too much on the series, though I do recommend watching the TOS episode "Space Seed" before The Wrath of Khan. If I recommend a single episode out of all of TOS, it would probably be "The City on the Edge of Forever". The Next Generation (TNG) took a few seasons to really hit its stride, some will recommend starting at season 3 - though I personally recommend suffering through the first two seasons at least once. Like TOS, TNG is highly episodic is mostly devoid of major story arcs. My favorite series, but probably more for nostalgia than anything else. "Best of Both Worlds" is a fan favorite episode, though I will recommend "The Inner Light" for anyone - even someone who has never even heard of Star Trek. Deep Space Nine was a bit controversial when it came out, as it moved away from Roddenberry's idealistic "Wagon Train to The Stars" model of a show and more into conflict and gritty geopolitics set in the same era as TNG. There's a story arc and the characters experience far more development throughout the show than the cast of TNG ever did. I've come to enjoy it more as an adult than when I first watched it on the air as a kid. As for Voyager or Enterprise, I haven't really watched either of them.