Z計画
Among Peirano's earliest professional works were the TV series "Plan Z" (1997), which he co-wrote, and "El Factor Humano" (The Human Factor, 1998), which he co-directed with former classmate Álvaro Díaz. Both shows were social satires exploring absurd humour and political incorrectness, though "Plan Z" used a comedy sketch show format while "El Factor Humano" took the form of a journalistic documentary series. "El Factor Humano" won an Altazor national art prize in 2000.