Reformed Readers discussion

Stole this question from another group. Aside from the Bible, are there other titles that you try to re-read every year or two? What draws you to those re-reads?

I'm thinking of rereading The Heavenly Man just to keep my life in perspective. I reread a lot of C.S. Lewis regularly. I actually have a whole bookshelf of titles to reread usually because I didn't fully understand them the first time and hope I'll have better luck the next time. :)