I think the 'sentimental' is when it hits you where you live. Physically and emotionally, we all live in different places (thank goodness) and what's home to some is crap to others.
Crying easily, sure. Anything that rattles the foundation unintentionally is likely to get that response. The stuff I find to be sheer crapola is when they try to evoke that response. Country music, perfect example: I've never felt less patriotic than I have since the new crop of songs has come out. I have a friend who gets teary every time he hears Red Sovine's Teddy Bear. (????) Or that song about the guy buying the car outta the old lady's garage, and it has a ghost letter in the glovebox? Gimme a break.
An' Jeri, lmao-- been there! (Feeeeeeceeees, whoa-whoa-whoa, feeeeeceees...)