Ratings categories

In the new film directory all films will be rated in several categories. This topic is to discuss which categories might be appropriate.

I want to try and avoid any "overall" category, that would cause people to compare films directly which really shouldn't be compared. Rather, I'd like to try and break the ratings down into a series of categories that would allow a user of the directory to find a film he may be interested in.

For example, my current build has the categories of Animation, Effects, Sound, and Story. Somehow, though, it feels like I'm missing something.

OK, discuss!