As a companion to my "Episodes with ONE redeeming feature" thread, let's talk about the opposite here: great or well-regarded episodes with one bit in them that just makes you cringe whenever it comes up. A clunky speech, a bad line reading by an actor, an obviously-recycled prop... That ONE little thing that keeps the episode or movie from being a perfect jewel for you. I'll start. I LOVE the episode "The City on the Edge of Forever." It's one of my all-time favorite episodes of Trek, but the speech that Edith Keeler gives to the folks at the mission just makes me roll my eyes whenever I hear it now: It's just too on-the-nose. "We're totally going to split the atom and invent spaceships and the astronauts are gonna solve all our problems, you guys!" I know Edith's supposed to have unusual insight, but come on. This sounds like she watched the opening credits and took a peek at the next week's script. I used to think COTEOF was flawless, but now I tend to agree with Rodent. I love the episode, but I could without Edith's speech. What are your cringeworthy moments in otherwise great episodes?