I loved the NJO books. It was getting kinda of dull with the whole empire saga. They cant really do much anymore.
The Yuzhann Vong was a blast to read and how they almost destroyed the galaxy. Like the use the progaganda, civil turmoil and the uphill battle Jedi faced after saving the everybody from the empire, and how they used some of the second degree characters.
By the whole, it was very interesting reading about the life and how the Vong worked and how they destroyed centuries of technology.
These books I feel would make very interesting movies/videogames.