The Butlerian Jihad (Legends of Dune, Book 1) , by Brian Herbert and Kevin J. Anderson.
The Machine Crusade (Legends of Dune, Book 2), by by Brian Herbert and Kevin J. Anderson.
The Battle of Corrin (Legends of Dune Series, Book 3), by by Brian Herbert and Kevin J. Anderson.
These are some of the longest, most tedious, over-written books I have ever read. If it hadn't been for the fact that I wanted to read the whole Dune series, in order, I would have stopped a quarter of the way through the first book. I actually caught myself looking at how much of the first book I had left to read and being surprised at how much more I was going to have to slog through. Surprising, since I thought that Brian and Kevin did a great job with Hunters of Dune.