I cried my eyes out when i watched "Marley & Me". If you've seen it and been unmoved you're a heartless monster!
I'm a heartless monster then evidently. It was a decent film, decent entertainment, and it was very touching, but it unfortunately it wasn't powerful enough to make me cry.
Also, the Pokemon movies make me cry. They drive me to tears of boredom and sleepiness. Pokemon 4EVER was incomprehensibly pathetic and it's only purpose was to distribute Celebi. XD It's almost reprehensible of them to extort tears from young viewers. We develop no connection to the characters; it's simply "Hey, Celebi dies! Let's cry badly voice-acted tears of sadness!"
As for movies that have brought me to tears, I might have watched too many to the point that I can't remember most of them. Then again, I've become mildly impervious to common tear-jerker's who's only purpose to be there is to force out your tear ducts.
However, I can recall those that REALLY made me cry. Here are the ones I remember off the top of my head.
Eternal Sunshine of the Spotless Mind - The brilliant love story was the true heart of this deeply moving film.
Requiem for a Dream - An inversely moving film. It will slap your tear ducts like hell.
The Wrestler - Mickey Rourke's performance is what moves this film beyond great.
Up - The only film that can make you cry within the first 5 minutes.
City of God - Extremely affecting, and extremely important.
A.I. - Artificial Intelligence - Even if it a film about robots, it has a beating human heart.
Titanic - Titanic is a monumental feat; both story-wise and technically. And it's guaranteed to make anyone cry.
Schindler's List - The most affecting war drama in history.
Grave of Fireflies - The 2nd most affecting war drama in history.
Million Dollar Baby - The ending goes down; with only the tiniest hint of redemption.
Departures - A life-affirming, elegant story of death that is deeply based on family.
Boys Don't Cry - Hilary Swank is
amazing.
It's A Wonderful Life - A Christmas classic that still stands to this day.
Ordinary People - The film's title describes why it's so moving, it's about ordinary people.
Dead Poets Society - O Captain! My Captain!
The Pianist - Answer me this. Would you actually expect a pedophile to make a film this moving? I think not.
Lion King - It's the circle of life that means no worries for the rest of our days that feels our love tonight. (I mean, the soundtrack was incredible)
Tarzan - Phil Collins' voice combined with that classic story just moves me to tears.
Life is Beautiful - I'll be damned to find someone who wasn't moved with this film. Incredible.
Brokeback Mountain - It's much more than a gay Titanic; it's more of a story of two souls who simply fall in love.
The Tree of Life - There are two ways to cry from this film. It's either you'll be bored to tears (to those who choose to not understand it) or you'll be moved to tears (for those that absorb it.) In the end, the second way is incredibly rewarding. It's a gorgeous experience.