There were quite few, at least one of which will get a mention later, because I cry easily.
The best/worst had to be the end of season 2, you know the one, where Owen is literally raging against the dying of the light, and all it takes to stop him is Tosh asking him not to. And she doesn't explain why, because she doesn't want to upset Owen, given that he's dying too. And they both die trying to keep someone else happy. And ... then I go, because it's not fair. Because they were finally becoming happier, more settled people (or for Owen values of that), and waaaah!
( The Other Days )
The best/worst had to be the end of season 2, you know the one, where Owen is literally raging against the dying of the light, and all it takes to stop him is Tosh asking him not to. And she doesn't explain why, because she doesn't want to upset Owen, given that he's dying too. And they both die trying to keep someone else happy. And ... then I go, because it's not fair. Because they were finally becoming happier, more settled people (or for Owen values of that), and waaaah!
( The Other Days )