At the beginning of the movie, set in 1985 New Year's Eve, can be seen to a child Encarna and her mother and aunts watching a TV show. This show is real and it was part of the TV special broadcast by former TVE-1 (actual "La 1", in these times the only TV channel in Spain together TVE-2, actual "La 2"), which was performed by humorist duet Martes y Trece composed by Josema Yuste and Millán Salcedo. The sketch is a parody of a radio show incredibly popular in those years called "Encarna de noche" (Encarna by the night), created and hosted by journalist Encarna Sánchez where she talked with ordinary people who called Encarna to tell their stories and problems looking for a solution. The sketch was an estimated audience about 35,000,000 people, turning in one of the most beloved in all history of the Spain's TV.
The character of Victoria Abril was originally written as an American named Meredith, but the actress told director Vicente Villanueva that nobody would buy her as an American, so after thinking about it for a while, Villanueva offered Abril the chance to play a deranged version of herself.
For the scene where Victoria Abril is wearing a Chanel shirt like the one she wears on Tacones lejanos (1991), the actress phoned Pedro Almodóvar to see how he felt about it, fearing he wouldn't like it and the scene would have to be dropped later. To Abril's surprise, Almodóvar thanked her for the gesture but told her it wasn't necessary.
The movie offers an inside joke in the scene where Ginés talks about the book he's working on and it is revealed that it has a long title. Encarna and him discussed the lower commercial appeal of an artistic project with a long title, and the joke is that the original title of the movie was 'Móstoles no es lo que parece o la importancia de llamarse Encarna', but was changed a few months before its premiere.
Actress Victoria Abril plays herself in this film.