Now that Kindle Unlimited is out and provides us a way to read lots of books for free

well kind of on our favorite ereaders everywhere -- the E-Ink ones

-- I thought it would be nice to have a thread where we can all recommend our favorite ones.
So here it is. Anyone have some new indie book they spotted through KU that they want to share? How about your favorite author who may just have had his/her backlist get offered?
Extra points for popular (backlist?) stuff that lots of people have heard about!

*
NOTE: You are allowed to list any books you liked, even if you didn't get them through KU.

Just so long as they are a KU title, obviously.
And you
can read them on your tablet too -- but only if you really want.

Also, direct links to the book(s)/author(s) in question would not go amiss.
* No cheating and saying Harry Potter, LoTR, The Hunger Games, or anything else that is actually in an ad on the front page.