Otto Michael PenzatoOtto Michael Penzato Selective FilmographyDr. Horrible's Sing-Along Blog(2008)CastActorAssistant directorFirst assistant director (3 episodes, 2008)Storm Watch(2002)Assistant directorFirst assistant director (as Otto Penzato)Scorcher(2002)Assistant directorFirst assistant director (as Otto Penzato)(*) uncredited