There's also the late Blake Snyder's Save The Cat tenfold classification scheme for screenplays, which can be useful at least for ameliorating a bad movie watch

There's also the late Blake Snyder's Save The Cat tenfold classification scheme for screenplays, which can be useful at least for ameliorating a bad movie watching experience by leading to debates over which one of the ten categories you just saw. On the other hand, if you know his categories, it can take away from the enjoyment of films; once you know you're watching a movie of a specific category, it's easy to anticipate the rest of the plot.