Ann Leckie's Ancillary Mercy
So this was a pretty great conclusion to Leckie's Imperial Radch series--it's been a long time since I was this interested and invested in a sci-fi series. I do wish these books didn't have a bunch of extras at the end--it means the end of the story comes before I'm ready for it! That's obviously a minor quibble though. I really especially loved all the AIs here. Good stuff. A/A-.