Dune: House Atreides - Brian Herbert and Kevin J. Anderson

Definitely worth a read if you like the Dune series.  I love that teh authors are going back and filling in some of the backstory.  I liked Dune, though it was a little weird at times.  There were a few bits that had me going, "Wait, what?" And I saw one of those explained in this book.  It has been a good number of years since I read the original Dune.  I think I'd like to read through all these prequels and then the original again.  This is a weird saga, but worth the time to get through it.