Star Wars Lords of the Sith
It's a novel in the new Star Wars canon. It's about the Twilek struggle on their home planet of Ryloth and how the Empire interferes with them. But that's more the backdrop than anything else. What this book is truly about is the relationship between Darth Vader and the Emporer.
Through the eyes of both Vader and members of the resistance on Ryloth we get to see the events unfold as an assassination attempt is made against the Sith Lords.
This is one of the more interesting looks at Vader's character development that I've ever seen. It does a good job of having Vader deal with his past as Anakin and in the process we, as the reader, get to learn more about the Dark Side of the Force.
I'm not sure how to talk more about what I liked in this novel without ruining some of the plot. But, it's an easy recommendation if you're curious about Vader, the Emperor, or the Dark Side and want to learn more.
It looks like so far they've done a consistently good job with media in the new canon of Star Wars. I'm still adjusting to having the old Expanded Universe wiped out, but if things continue like this I'll be happy.