The B-Movie Glossary – most amusing..
Sample:
Horror Moral Code: in their own weird way, horror movies have a code of ethical conduct that’s more strict than anything that real people have ever adhered to. In a horror movie, deviation from the status quo, as typically represented by a milquetoast protagonist, or engaging in morally questionable activities (anything from premarital sex to illegal drug use to simply being a bastard), invariably results in death. While it’s strange when you think about it, in their own way, horror films are incredibly conservative.
[via Mike on the Weasel Patrol]