The NYTimes asked 500+ authors what their favorite books of the 21st century were. The page is interactive so you can track what you've read or hope to read. My fave is on there at #52: Denis Johnson's Train Dreams.
I've posted the full list in the above link, but you can also browse by the polled authors, which may be of more interest.
If you're someone who's always looking for a good book recommendation, you may also appreciate this Ask Metafilter thread: Nonfiction Authors Who Know What They're Writing About.
