What do you call four movies?

Could you please elaborate on what you mean by "What do you call four movies?" Are you asking for a term that collectively describes a set of four movies, or are you inquiring about a specific instance where four movies are referred to by a certain name or title? If the latter, then the answer would depend on the context and content of those particular four movies. However, in general, there isn't a universal term that describes any set of four movies without further specification. They could simply be referred to as "four movies" or "a collection of four films," depending on the context. Could you provide more information or clarify your question?