So for me as a kid it was Snoopy Come Home. I wanted Snoopy to stay with the little girl and was inconsolable for hours.

Re: LYF, interesting Aquinas, I wonder if my reaction would have been different with different illustrations. Certainly knowing the back story changes my perception of the words. This was pretty much my take on it (although, again, knowing the back story I don't feel quite the same way):
http://www.waitinthevan.com/2011/02/character-assassination-carousel-love.html

I had 24 hours after my son was born before receiving his diagnosis. For those hours we thought that we was early (33 weeks) but healthy, and even though I didn't get to hold him life seemed pretty perfect. It is poignant to remember that time. And UM, it is amazing what can trigger those memories. I nearly had a PTSD event driving down the highway past a billboard for the maternity unit at the hospital where he spent 2 months. It all came back.

The Giving Tree always made me depressed: http://www.ninjamomblog.com/2011/01/character-assassination-carousel-giving.html#.UjBYVcasim4
The Sassy Gay friend's reading of the Giving Tree made me laugh too. (it is slightly r-rated, but funny)

DD12 for sure has this. She sobbed through the entire last Harry Potter movie, and also the end of the Chronicles of Narnia books. She was devastated the other night at the end of The Book Thief. (although with Death being the narrator, it seems there must have been some foreshadowing, right?) I understand. And I always felt better after a good cry. As a teenager though there were some awkward moments in movies when I would be just torn up and everyone else was fine.