Best books?

I started this blog last February, so it's too early to summarize my year's reading and the experience of blogging about it for a year.  But now that the New Year has come and gone, it does seem like it's time to summarize the books of 2012.

Best books so far?  Yes, it needs to be plural:

• Best nonfiction:  Thinking, Fast and Slow by Daniel Kahnemen.  Thought-provoking.
• Best fiction:  The Lacuna by Barbara Kingsolver.  She's matured so much as a writer since she wrote The Bean Trees.
• Best SF: The Windup Girl by Paolo Bacigalupi.  Dark, unlovable, and brilliant.
Runners up:
• Yellow Blue Tibia by Adam Roberts.  Well-written period piece, with more than a soupcon of irony.
• Ready Player One by Eric Cline.  Just fun, even if the last third of the book was a little disappointing.
• Best poetry: Memory's Daughter by Alice Major

I could pick out more "bests".  But I don't really think of mysteries in that way.  And I didn't read enough of any other type of book to really judge a category.