I dont just mean sometimes when you watch them you'll cry...i mean EVERY time, like you have no control over whether or not you're going to cry?
what parts in said movie(s) are particularly tear jerking?
I am aware that it makes me a nerd but I bawl my eyes out during Return of the King. To a lesser extent I do this with the other Lord of the Rings movies but ROTK is the worst by far. I just had a marathon with a friend in which we watched all three extended editions and for the past 45 minutes I've been sobbing like a pansy.
I can;t even narrow it down, I probably start getting misty around when Gandalf leaves Rohan with Pippin but there's just so many parts that send me reaching for the tissue but the ending is obviously the worst...so sad and so beautiful and happy at the same time.