Probably my favorite part and my biggest gripe in the whole entire episode is the Vulcan officer Selar. I do not understand why this character only appears in this one episode. She's awesome! She has more character and intrigue in this one episode than T'Pol did in a whole season of Enterprise.
Selar is a favorite of mine and actually the only reason I even remember this episode these days. She was THAT good! I was bummed that she never reappeared again when TNG was usually very good with bringing back reoccurring characters. I guess TNG was still very reluctant at using Vulcans at that point.
Suzie Plakson rocks whether she is playing a Vulcan, a Klingon, or a Q!