Joan Lui (also known as Joan Lui - Ma un giorno nel paese arrivo io di lunedì) is a 1985 Italian musical-comedy film written, directed and starred by Adriano Celentano. It is the last of the four films written and directed by Celentano and it is also the last film starred by Claudia Mori.The film was a box office bomb, grossing 7.3 billion lire at the Italian box office in spite of a budget of about 20 billion lire.