(Somewhat) recently, three different tv shows had me crying a lot.
—CSI: NY s5e22: “Yahrzeit” an episode that dealt with the Holocaust and its aftermath. It really got to me for several reasons: one, it was very personalised (it wasn’t just a large number of people, it had affected these specific people) and two, Mac’s dad was a big damn hero. (And every time I learn more/hear about the Holocaust, I feel like curling into a ball and crying until I can’t cry no more.)
—Bones s4e3: “The Finger in the Nest” had me crying from the dog abuse/fighting and the ending of that episode. (It’s a bit spoilerific.)
and most recently,
—True Blood s2e9: “I Will Rise Up” the end of that episode is extremely poignant.
Also, Into the West (from LOTR) makes me cry almost every time I hear it. So does The Call (Regina Spektor sings it; it’s from Narnia: Prince Caspian), but that’s more because of how much CS Lewis didn’t resolve at the end of that book.
If there’s a lot of emotions flying around, I’ll start crying. Also, if a character (in a movie/tv show) is crying, that often makes me start crying.
I’m so emo. :P