Hachi- a Dog's Tale, watched about 6 months ago,and I sobbed, like a baby at the end, and I don't mean ladylike tears gracefully rolling down my cheeks, I mean I was a sobbing, gulping, snotty mess, it just broke my heart!
I do not recommend watching this members of your family, who, if they're like mine, will rip you to shreds with no mercy whilst you're a gibbering wreak.