Joan Lui - Ma un giorno nel paese arrivo io di lunedì

Joan Lui
Italian theatrical release poster by Renato Casaro
Directed by	Adriano Celentano
Produced by	Mario & Vittorio Cecchi Gori
Written by	Adriano Celentano
Starring	Adriano Celentano Claudia Mori Federica Moro
Music by	Adriano Celentano Pinuccio Pierazzoli Ronny Jackson Gino Santercole
Cinematography	Alfio Contini
Edited by	Adriano Celentano
Release date	1985
Running time	163 min 133 min (cut edition) 125 min (Home Video cut)
Country	Italy
Language	Italian

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.

Title character Joan Lui is a singer who has come from another world to condemn the hypocrisy and atrocities of the Western culture. When he arrives in Italy, he seeks to create a musical group composed of young beginners to better spread his message. After having exposed the deception of a major musical producer, Joan Lui disappears into thin air. Meanwhile, the world is plunged into a terrible apocalypse.

The film was also the center of a dispute between Mario and Vittorio Cecchi Gori and Celentano as the producers decided, a month after the first release, to replace the original cut with another version, with a different editing and lasting 30 minutes less.

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.

The film also received generally bad reviews. Morando Morandini described it as "an enormous music video based on visual shock, jam-packed with music, with some monumental sets and elaborate editing. A true festival of kitsch also on an ideological level". According to Paolo Mereghetti the film, "a personal reading of Christianity in musicals", was "a personal delusion of omnipotence", "a mock-apocalyptic madness that is just able to list the worst clichés of indifference".