Mockingbird is such a powerful book. It deals with small town Southern life in the 30s and racism and faith and what it means to be a Christian and a lot of other great themes. It's all written from the point of view of a 7 or 8 yr-old girl. It's funny and moving and intense all at once.
It's not uncommon for me to be moved to tears by a movie (especially movies about sports or dogs) but I've only been moved to tears two or three times by a book. I get misty every time Aslan shows up in the Narnia books. I had a little something in my eye reading a Harry Potter book once. I teared up a bit in Brennan Manning's Ragamuffin Gospel. But I was all-out crying/tears running down my face/snotty nose/weeping as I read Mockingbird in the airport the other day. This is one of those books that should be required reading for the human race. Read it if you haven't.