Remember Me actually made me cry a lot.  The ending, plus I felt bad for the sister after what those asshole kids did to her hair.

I third Blue Valentine.  Such an emotionally amazing movie!

I've only cried in a couple of films, though randomly Short Circuit nearly broke me when I was a kid.

Up- When the guys wife dies crushed me. I blame it on the fact I had just spent two awesome weeks with my then girlfriend who lived in New York. I watched it on the plane on the way home and it just got me. Was pretty embarrassing.

The Impossible- The scene where Ewan Mcgregor phones home, he breaks down and hangs up, I just found his performance so powerful in that scene, I felt his pain. I tried to resist the tears, but I couldn't.

I think most Pixar movies pull the heart strings.

Up made be cry.

And Toy Story 3 when they toys are in the furnace and they all look around and hold hands.  Killed me. <\3

Although nothing has really made me cry, there have been films that got my close to it.

Atonement is a huge one here, just an amazingly story that's sad to its very core, just those last few minutes are incredibly depressing... And the second one is Moon, gets me every time.

I second Toy Story 3 - I was watching it with my kids and thought 'oh my gosh, I'm going to cry'.

I have to also add - My Sisters Keeper + Mary And Martha (TV movie, 2013) - some intense moments in those movies.

Hachi - A Dog's Tale was pretty sad once Richard Gere's character dies.

E.T. at the end when he leaves Earth.

On God.  How could I forget My Sisters Keeper?!  I SOBBED my heart out!  I'm a big girl, I love soppy movies!