What to blog about?

Just what to blog about? If we are blogging on previously read stories or novels I would really prefer if they would be action packed, or a constant thinker. Something that keeps you busy while reading and prevents you from putting the book down for too long. As for other topics that are not on pieces of literature I like topics which make you about everything, Like in Angels and Demons. I'm have severe troubles putting that book down, and when I finally do I'm constantly thinking about it.