As a kid, the first movie I remember making me cry was 'Ode to Billy Joe'....I'm a bit of a control freak, I remember my mother finding me wiping and wiping at my eyes trying to make it stop and telling me "it's ok to cry y'know"....so of course I denied crying at all and said I was just too tired, and angry that my eyes wouldn't stop watering, then went to bed to hide that I still was.
After that, there was a long phase where no movie got to me, then I saw Titanic with my wife back when we were still dating...that scene where the old man and the old woman hold hands as the water rushes in had my chest heaving.
I used to pride myself on being a stoic individual, but it seems in recent years I tear up at the drop of a hat. Whether that be because of 9/11, some natural part of the aging process, or me just letting go of a lot of the stuff I repressed over the years, I dunno.