I just finished The Dog Stars by Peter Heller the other day, and it was one of the best things I've read in a long time. It's a post-apocalyptic story about a guy in Colorado who's one of the last Americans alive after an epic disease kills most everyone else, including his wife and friends. The guy, Hig, lives on an abandoned airfield with his faithful dog and his only acquaintance (who's an ex-military survivalist gun nut - the dialogue between the two of them is pretty funny at times), and each day he flies his little plane around looking at the empty country surrounding them. Then in the second half of the book things change and Hig goes on sort of a quest for redemption.
the book was alternately humorous, heartbreaking and beautiful to me. Its got plenty of action and human atrocity, but it's also got plenty of nature-watching and contemplative thinking - that might seem like a weird juxtaposition, but it totally worked for me. It's written in sort of a jerky stream of consciousness style (by our narrator, Hig) that may take a little time to get used to for some people - I really liked it though and felt it conveyed the character's voice in a great way. Definitely two thumbs up here from me, I'm recommending it to everybody I know.