The one movie that *always* gets me boo-hooing is "Terms of Endearment." I've never gotten immune to it, and now I turn it off, because it gets me crying to bad!
The very first movie to get my crying was Franco Zeferelli's "Romeo and Juliet." We went to see it in the 9th grade, and from the time Romeo was banned from Verona until the end of the movie, I blubbered like someone had died! My friends were totally embarrassed, but I just couldn't help myself! LOL!