For this paper, I need an overview of the filmography of Luis García Berlanga. The major works that need to be presented and analyzed are 'Bienvenido, Mr. Marshall' (1953), 'Plácido' (1961), 'El verdugo' (1963), and 'La escopeta nacional' (1978). I advise to also include the rest of his filmography, but with less emphasis. Please, make sure to analyze different themes and stress how Berlanga created sharped and humorous portraits of Spain in those decades.