Marcello Mastroianni starred in several of this director's films, including "La Dolce Vita" & "8 1/2"
.... As with most 
Italian films of this period, the sound was entirely dubbed in afterwards; following 
a... [DOC] [TLE] Marcello Mastroianni | Italian actor | Britannica.com [PAR] Marcello Mastroianni and Anita Ekberg in La dolce vita (1960).