The top three so far:
Eleanor and Park by Rainbow Rowell. The author of this dual narrative YA novel breaks some rules, all to excellent effect. I'm sure I am not the first person to think "How did she know that about me?" while reading it. The publisher says this 2013 book "is the first young adult novel written by Rainbow Rowell." Trust me, most people would be happy to have written one book this good... Now I want to read her other books, too. The book was briefly banned—for being too realistic about sex, I think. Sigh. Now there's a movie in the works.
The Wave by Susan Casey. The subtitle pretty much says it all: In Pursuit of the Rogues, Freaks and Giants of the Ocean. This non-fiction book is as gripping as any thriller, and just as hard to put down. My husband Russel and I seldom love the same book, since his taste runs to hardcore non-fiction, but this book kept us both up nights. The globe-trotting Casey is a genius at distilling pertinent facts, and various expert's knowledge into digestible nuggets, all wrapped in colorful, compelling prose. I also recommend her book about dolphins, Voices in the Ocean.