I read 52 books in 2012, an average of one per week.
I enjoyed most of the above quite a lot, but if I had to pick ten favorites, they'd probably be the following (and the list would surely be slightly different tomorrow, or the day after):
J. M. Coetzee, Waiting for the Barbarians
Jeffrey Ford, Crackpot Palace
K. M. O'Donnell (Barry N. Malzberg), Gather in the Hall of the Planets
Par Lagerkvist, The Sibyl
Nina Kiriki Hoffman, Permeable Borders
Jim Holt, Why Does the World Exist?
Jean-Claude Carriere, Umberto Eco, This Is Not the End of the Book
Michael Macrone, It's Greek to Me
Isaac Asimov, A Short History of Biology
Christopher Hitchens, Mortality