
Watchability: Extra Credit
Short Answer: Definitely worth watching to see a little more about Worf's character.
Quotations: "That is not our way. Cowards take hostages."
I enjoyed this episode because it featured a number of new topics for the series. It is the first time we see a story centered around Worf. It's nice to see that he gets a moment to shine this early in the series, because he has a much bigger role later. It is also the first episode where we get a deeper look into Klingon culture.
Vaguely Spoilery...

I like this episode a lot because of that dynamic. At the beginning of the episode, Worf is excited at the chance to see other people of his race. Instead, they question whether he is a "real" Klingon. By questioning his decisions, they make him feel like an outsider. By the end of the episode, the Klingon rebels are the outsiders because they are unwilling to accept the change that is happening in their society. Worf, as it turns out is the ideal that the Klingon Empire is building toward. I made this episode Extra Credit, but I highly recommend it.
Side Notes

(2) If you are new to Star Trek, the Klingons were the enemy of the Federation (Earth and its allies) during TOS. In between the two shows, the Federation and the Klingon Empire have become allies. The Undiscovered Country, a TOS movie that came out after this episode aired, shows those events in detail. (Nested Side Note!) The actor that plays Worf has a small part in the movie where he plays Worf's grandfather.