Whenever I watch Jaws,* I get a little teary-eyed (shocking, right?) when the boy on the yellow floatie dies. Oddly enough, this is a fairly recent phenomenon, as the first time I saw Jaws I must have been 7 years old, and I don't remember being particularly troubled. (Aside from the nightmares, natch.)
At some point during my adulthood, I realized that the little boy's mother reminds me of my mother.
* In case you were wondering, I'm watching Jaws in honor of my current study schedule: Professional Responsibility (ie, lawyer ethics).