I cry at parades. My mother used to do the same thing and we all thought she was weird, but somewhere in my 20's I started having the same reaction! The Macy's Thanksgiving Day parade will do it a bit, but the local 4th of July parade on Main Street where I know half of the people? I weep (or fight off weeping) the whole time. Really mortifying. Something about the community spirit, hard work, earnest young people, and patriotism combine to just hit me that way.

And yes, books make me cry, regularly. Even kids books - On the Day You Were Born, especially - will make me cry.