If you mean the latest book I've finished, then it would be Stephen King's 11/22/63.

I love the style of it. It shows the 60s America - a place and time I'd love to visit had I the opportunity - in good details while not hindering the story.

Moreover, the way Mr. King tells the story - so that the protagonist has to work to get to his objective and has major obstacles on his way, many of which he doesn't overcome and has to back because of it - is precily why I like his fiction (I've also read his shorter stories from the Goes to the Movies compilation as well as Cell). Not only such storytelling makes sense from the real-world perspective that I'm looking for in my own writing as we as others', it makes the reader feel the character's pain and pleasure because they're able to relate.

I must say, however, that I didn't like the ending of the book. After all the gorgeous storytelling and the exciting story it's impossibly shallow. The mistical atmosphere of the whole plot is shattered into pieces with one unnecessary and bland explanation. Cell did a lot better with retaining the ambiguity of the ending and the overall situation: no explanation given as to precisely how and why it happened, and it felt good not to know it.

The book I'm reading now is a collection: One-Storey America. It combines the Ilf and Petrov version (the 1935 Soviet journalists' impression of the US after a travel across it, a wonderful insight even for Americans of that time period) with the Pozner and Urgant (the 2006 Russian showmen's impression of the country, following the same route as Ilf and Petrov, the result of filming the TV series of the same name for the Russian TV) and the Kan versions (Brian Kan being the, uh... Montanan? who'd provide additional insight for the new crew in a similar manner to what Mr. Adams did for the Soviet journalists). Worth reading - at least the Ilf-Petrov part, for I'ven't read the Pozner-Urgant part yet - even if you're an American and think you know everything there is to know about the country, as evident by the contemporary reviews of the US newspapers.