In Search of the Multiverse. John Gribbin - Gribbin This is definitely a Great read so far, but I must admit, that Chapter 4 is a wee bit too abstract/"floaty" to me, but again, I am not a physicist! Gribbin is doing a god job at explaining and visualising complex theories to a layman such as myself... Have to admit that it does give me more questions about the nature of our universe! :)
Highly recommendable!