Reading

Okay, I know I owe everyone a nice long post to update you all, but I have to go to work so that will have to wait a little longer. I'm writing to ask for suggestions on books to read. Whenever I try to pick out my own book it's no good, but when I get suggestions I'm usually really excited about it. So, I'm talking mostly non-fiction here, and would love suggestions of books you've read and enjoyed. Also, specifically, does anyone know a good commentary on the Gospel of John?