These are three scenes from Requiem for a Dream. The second scene is the crying scene. The third scene wasn't exactly a crying scene, it was more like a freak out. Unfortunately, you don't see any tears from Jared Leto but you clearly hear him sobbing and I love the way his voice sounds, it's all high pitched.
http://youtu.be/BN8u7zVvh-A
Here's also more crying scenes from Requiem for a Dream
http://youtu.be/ADJE5gat_W8

And in this link, Jared Leto gets teary-eyed
http://youtu.be/GSK-R2EVzog