The trailer hardly blew me away and may have turned me away some. It just looked fairly crummy and, I dunno, "typical" of the genre.
I felt that too, except since this is going to be intentionally tongue in cheek I think it has that going for it. I've never read the book though. I'm tired of all the super effects in action movies, and wish that it could be played more straight forward. It would be funnier to me if it didn't rely on "OMG what if Lincoln fought vampires with Matrix jumps!" humor.