During the past few years, pop culture genre mashups (the mixing of two seemingly unrelated genres in one work) have been increasing in number. We’ve recently seen the release of movies in which gunslingers battle aliens, historical characters fight supernatural menaces, and there have even been films containing mixtures of horror and comedy (said mixture having been around almost as long as movies themselves, only these days it’s designed to be funny on purpose).

But genre mashups aren’t anything new; they’ve been around for a very long time. More