I think by now I've made it clear that I love book lists. Right now I have on my desk several folders consisting of old copies of QBP monthly fliers (from the time when I still received the physical flyer, not just the online links), a bunch of pages pulled from old Romantic Times magazines, lists from libraries, from various other magazines, and from the Internet. There are also some handwritten lists and scribbled notes cobbled together from all those times when someone mentioned a good book to me.
So...even though I'm a bit late (we're already past the middle of January), here are some "best of" lists I found for 2012 (there will be some overlap, I'm sure). I hope you find at least one good book you'd like to read.
from The Book Lady's Blog - The Book Lady's 10 Best Books of 2012
You may have already seen this. It's the winners of the Goodreads Choice Awards 2012
A list of lists: NPR's Best Books of 2012
Amazon's Best Sellers of 2012
Barnes and Noble Best Books of 2012
Book Riot's Best Books of 2012
From The Guardian: Your Books of the Year 2012
Also from The Guardian - If you haven't seen this page of The Guardian, it's a wonderful list of lists (465 as of today) going back years, not just 2012. The lists are made by authors who choose their favorite books on a specific topic (recent ones include adventure stories, books of the forest, books with maps, time-travel books, seventeenth century food books, fairy fictions and so many more).
The Guardian's Top 10s
School Library Journal's Best Books 2012
Library Journal's Best of (there are several pages to click through as books are broken down by category)
Another List of Lists - Booklist Online shares links to all the award lists for books and media
USA Today's Best-selling Books of 2012, from the top down
I could go on. This didn't even scratch the surface (I left out The New York Times, Publisher's Weekly, The New Yorker, The Washington Post, The Atlantic, Slate, Esquire, Huffington Post, Salon, Seattle Times, The Wall Street Journal, SF Gate, Time, Salon, Pop Matters, and Newsday, just to name...a bit more than a few). Book lists are everywhere, but I hope that the ones above are a good start.
Note: lists are subjective, of course, other than the ones based on sales, but I have no problem with personal "best of:" lists. I don't mind at all when someone says, "These are the books I liked. You may or may not like them." Because yes, there is a book and a book list for every taste and every genre.