Lorrie Moore's A Gate at the Stairs. Not yet finished, but I still concede a wee bit of disappointment—if only because I'm so dazzled by her short stories.
Paul Yoon's Once the Shore: artful and enchanting narratives by former fellow Bread Loafer.
Slowly chiseling away at Darwin's The Descent of Man, as research for a novel I'm writing, and The Art of Fact: A Historical Anthology of Literary Journalism, in preparation for a nonfiction course I'll be teaching in the spring.
And I've definitely overestimated what I thought I could read during winter break ... Have a back-breaking bag of paperbacks that will likely have to wait their turn. Sigh.