I don't cry often, but while I was in college I came to the city for a weekend and saw four shows all of which made me tear up:
Jersey Boys (the daughter dying just really hit me)
Sunday in the Park (I mean, c'mon)
Spring Awakening (the funeral sequence was really touching)
South Pacific (I think it was the first time I cried because something was so beautiful)
Recently I saw a semi-pro production of RENT that had me sobbing. I'm talking full on ugly cry.
Next to Normal
Billy Elliot (seen it 4 times now, and it still gets me)
"If this is going to be a Christian nation that doesn't help the poor, either we have to pretend that Jesus was just as selfish as we are, or we've got to acknowledge that He commanded us to love the poor and serve the needy without condition and then admit that we just don't want to do it." -Stephen Colbert