Re: Worst lines of dialogue in the entire series?
Here's one from "Patterns of Force":
SPOCK: Your uniform, Captain.
KIRK: Yes, it's a shame yours isn't as attractive as mine. Gestapo, I believe.
SPOCK: Quite correct. You should make a very convincing Nazi.
If Spock only had the uniform in mind, wouldn't he have said "IT should make a very convincing Nazi."?
"The first duty of every Starfleet officer is to the truth, whether it's scientific truth or historical truth or personal truth! It is the guiding principle on which Starfleet is based! Jean-Luc Picard