I've been listening to the 22 hour audio book "Fabric of the Cosmos". I got it through an account at audible.com, which if you like listening to audio books is a really nice reasonably-priced service. (Especially good if you do a lot of driving [not me], or have insomnia [me]).
I'm really loving this book on physics and space+time. One of those books trying to convey the amazingness of the history and current state-of-the-art thinking on phsysics to laypeople. stuff that makes your jaw drop and realize that the real world is just as amazing as any science fiction story. the stuff on einstein's relativity is wonderful.
Seems as a new member you can get it for $11, might be interesting to some people:http://www.audible.c...uctID~BK_BKOT_000174
note that audible uses a somewhat annoying drm system that may make it difficult to listen to this on some portable mp3 players, etc., so check that out first if that's what you want. It's a shame they make it so hard to convert these audio books into mp3 format even for your own use. having said that, i still think audible is a great deal if you like audiobooks, and they have nice reviews and good searching, etc., so i give them a thumbs up.