The ending of The Notebook. I cried, in public, in the theater.

The scene in Chrono Cross where (SPOILER)Serge goes back in time and rescues Kid from the burning orphanage, but then when they're safe he disappears and Kid's left behind all alone and confused "Star-Stealing Girl" makes me think of this scene and therefore also makes me cry

The scene in The Fountain (best movie of all time) where (SPOILER)Tommy tattoos his wedding ring back on...having lost a girlfriend to cancer, I relate to this scene so much. Also, losing a girlfriend to cancer will definitely make you cry. I don't recommend it.

And, the one that's gotten me since I was a kid and still does to this day, the song "Don't Take the Girl" by Tim McGraw. Too much feels.