My son and I went yesterday to see the 4:30 p.m. matinee of Abraham Lincoln Vampire Hunter in 3D. I had read the book of the same title, written by Seth Grahame-Smith, who also wrote the screenplay for the movie. As a lot of movies made from books don't always follow the book, I was curious to see what differences, if any, there were between Mr. Grahame-Smith's book and his screenplay. There were a few things that were in one but not the other; however, the movie was fairly close to the book. I personally liked the movie, and recommend it.
My son will soon be putting a better review up at http://suttonatthemovies.blogspot.com/, so I highly recommend you visit periodically to see what his views were on the movie.