I don't watch a lot of movies, and the ones I watch, I almost never watch repeatedly. However, I cry very easily (I've been known to cry during particularly touching reality tv episodes, though I do my best to make it appear that my eyes are just watering on their own in some non-emotional something-in-my-eye sort of way).
Long way of saying that my list is quite short, but here goes:
Philadelphia - opera scenes
When A Man Loves A Woman (I know) - I don't have a specific scene in mind, but I used to have this on VHS and it consistently made me cry
Bambi - I'm sure you can guess
Other movies - pretty much anytime someone dies and/or is separated from their true love; perhaps this is why I watch mainly comedies (I'm pretty sure I have cried during
South Park: The Movie before, but I'm having trouble recalling which part)
The forrest chase scenes in
Sleeping Beauty still freak the shit out of me, but they don't make me cry.
ETA - I can't believe I forgot
Traffic - shooting outside the courthouse