The Quinessential Trek Episode

[Nate the Great]

Note I don't say "the best Trek episode." I said quinessential, as in "if you met someone who had never heard of Star Trek (a next to impossible proposition, I grant you), what one episode would you show to that person to tell them what Star Trek is all about?" The options in this poll are the result of my going through the episode lists on startrek.com and picking the ones I think are good at showing the meaning of Trek. Very few of these would fall in my personal top ten (or even top 25). I'm also limited to ten poll options, so I'll admit to a lot of self-filtering, but I think this is a good selection to get a little discussion going.