Not the movie so much, although I am interested in seeing it, but makeup.
I have never truly sat down and appreciated the effect makeup can have on a film. I frequently find myself writing it off as merely an adaptation of what has been done before. For instance, I just assumed that once people created the stereotypical look of a zombie (rotting, slack jawed, dead eyed faces) that every other makeup artist just did what they could to recreate that look with a few minor touches. It never really seemed that complicated. I appreciated that it was a difficult task, but this was their job, and people who are good at their jobs can often do difficult things easily.
Nowadays I'm starting to think more on the idea that a movie with bad makeup is a bad movie. If something doesn't look natural in the setting of the film it will constantly keep viewers from truly immersing themselves in the world, regardless if it's a realistic world or a world with a Great Pit of Carkoon in it.
While the previews for Warm Bodies didn't stick out to me, it was clear that one important focus of the film was the gradual increase in humanity, and this seemed to be greatly reflected by the makeup. Therefore, if the makeup is bad one of the major plot points of the film will be difficult to believe or get emotionally involved in. Now I'm interested in seeing the film purely based on how the makeup looks as the movie progresses. I have never experienced that before, but I'm excited about it. Expanding my focus as an audience member. Cool beans.