As I posted in the Whatcha Readin' thread, I just finished Lonesome Dove for the umpteenth time. I adore this novel, but man, I cry like a baby the entire last third of the book.
But, in a good way I love books that make me feel - happy or sad or even angry.
Here are some other books that have made me cry (that I can remember easily, off the top of my head, I am sure there are more):
Year of Wonders - the plague!
Through a Glass Darkly (sequel sucked, imo)
Love is a Mix Tape
Where Loves Goes
Crack in Forever
I particularly remember A Crack in Forever and Year of Wonders because I read them on planes - sobbing my eyes out, figuring every other passenger thought I was nuts!