Favorite personal finance book?

If you had to pick just one personal finance book to recommend, which would it be?

My favorite is Possum Living by Dolly Freed. Many people would find keeping chickens and meat rabbits in the cellar and spending only $1400 per year pretty extreme, but it really helps put your own finances into perspective and helps you realize what is possible.

I own the book and love to lend it out to unsuspecting friends or my in-laws for shock value.