Do you have a favorite ballad?

I always thought ''Master of Puppets'' was overrated, with the exception of itself (title track), and the next two tracks.
Welcome home (Sanitarium) is my all-time fave ballad.
This is probably due to the fact that I've been institutionalized 4 times, so it hits close to...home.
Do you have a favorite ballad, and is there a personal reason?