This evening I finished The Year of Living Biblically by A.J. Jacobs.
I read about the book in an article on Mental Floss, and the concept fascinated me.
For a year, Jacobs did his best to follow all of the commandments, directives, and laws in the Bible (around 700 of them). And he worked with rabbis, ministers, priests, hasids, and read stacks of books as well as multiple versions of the Bible.
It truly was a fascinating read. For eight months he stuck to the Old Testament, then for the last four months (plus another two weeks) he added in the New Testament.
It was a fun read, and I would recommend it to anyone, regardless of their present or former religious experience.