Not many books have brought me to tears.
Spirit of the Wind by Chris Pierson brought me to tears several times, the only Dragonlance novel to do so (though I do get choked up in Dragons of Autumn Twilight and Dragons of Winter Night when certain characters die).
Oath of Gold by Elizabeth Moon, the last book in the Deed of Paksenarrion series got to me too, during the emotional climax of the book. I went through the whole gamut of emotions on that one 'cause I was REALLY invested in Paks. Rage, Anguish and Elation at the resolution...though rage at what happened was still there. What happened to the bad guys didn't satisfy me; I was really bloodthirsty at that point.
JediSoth