"Have you ever cried about a movie? If so, which one, or ones?"
YES. SO MANY.
Homeward Bound. Up. Toy Story 3. Harry Potter 4, 5, 6 and 8. The Fault In Our Stars. The Perks Of Being A Wallflower. Big Fish. Meet The Robinsons. Titanic. Step Mom. Pay It Forward. The Lion King. The Fox & The Hound. P.S. I Love You. Bridge to Terabithia. I Am Sam. Cast Away. Forrest Gump. Radio Flyer. Tuck Everlasting. An American Tail.
There's more, I just can think of them at the moment.
Also, there is one episode of Doctor Who that makes me cry every time I watch it; Vincent and The Doctor. It's one of my favorite episodes, but it always gets me.