Like a lot of you, country music makes me weep. I start crying whenever I hear country music for more than a couple of songs in a row, just because it hurts so much to know I'm enduring it rather than just being dead. It was like that when a friend put on a "Creed" CD, too.
But other than that, the song that makes me tear up is "Step Into the Light" by The Afghan Whigs. Most personal break-up song ever.