I'll second the Dallas shower scene as one that really pissed me off; since I didn't watch the original Dallas until 2012 when the revival started, I even knew it was coming and it still pissed me off. 
I'll also second the way Trek characters seem to just shrug off trauma like it's nothing; not just Picard and his experiences as Locutus and a Cardassian POW, but Geordi getting brainwashed by the Romulans, and pretty much every "O'Brien Must Suffer" episode of DS9. For certain, Deanna Troi earned her keep on the Enterprise what with all the crazy shit everyone endured.
And I know we're supposed to stick to TV here, but the whole Star Trek II-III-IV unintentional trilogy is basically making a sacrifice and then having it reversed. Spock gives his life to save the crew, but it's OK, he comes back. Kirk scuttles the Enterprise, but it's OK, he gets a new one. Kirk hated being an admiral? It's OK, we'll reward him by demoting him back to Captain. About the only permanent loss in those films is David, and that's played as him paying the price for screwing around with protomatter, and after Kirk and Saavik's brief conversation on the Bird of Prey in IV, he's forgotten until Kirk needs an excuse to be racist about Klingons in VI. As much as I enjoy those films, it's really aggravating at times.

I'll also second the way Trek characters seem to just shrug off trauma like it's nothing; not just Picard and his experiences as Locutus and a Cardassian POW, but Geordi getting brainwashed by the Romulans, and pretty much every "O'Brien Must Suffer" episode of DS9. For certain, Deanna Troi earned her keep on the Enterprise what with all the crazy shit everyone endured.
And I know we're supposed to stick to TV here, but the whole Star Trek II-III-IV unintentional trilogy is basically making a sacrifice and then having it reversed. Spock gives his life to save the crew, but it's OK, he comes back. Kirk scuttles the Enterprise, but it's OK, he gets a new one. Kirk hated being an admiral? It's OK, we'll reward him by demoting him back to Captain. About the only permanent loss in those films is David, and that's played as him paying the price for screwing around with protomatter, and after Kirk and Saavik's brief conversation on the Bird of Prey in IV, he's forgotten until Kirk needs an excuse to be racist about Klingons in VI. As much as I enjoy those films, it's really aggravating at times.