Watch Full Movie Online. An adaptation of Luis A. Maisonet’s 1959 film "Juan sin seso", Israel Lugo’s "Brainless Juan" looks at how, half a century later, celebrity influences the individual. Using the original audio from the 1959 film, "Brainless Juan" shows images of everyday life in Santurce’s streets and back alleys, using subtle irony to deliver a strong message.