This is one of those movies that you can watch several times. They are just fun, with an absolutely charming plot and lots of food for thought.
La Belle Verte (The Green Beautiful), a 1996 French film by Coline Serreau, is a wondrous utopian comedy packed with a socio-critical narrative that highlights some of the tragic and ludicrous sides of the modern lifestyle. The people from la Belle Verte, a distant planet with a much happier and more advanced society, view planet Earth as backward and unattractive for a visit (incarnation). Only one volunteer can be found to fly to Earth and help activate some progress in consciousness. As the people on Earth have contact with Mila, the visitor from another world triggers in each one a powerful moment of awakening.
The version chosen here is in French with English subtitles.
Related:
Watch the original film in French La Belle Verte
Watch in German Der grüne Planet
La Belle Verte on Wikipedia
La Belle Verte on IMDb