Various scenes with Chivo ... e.g. when he comes up from the horizon, offers milk to drink or stands under the shower.
There is a sticker of Goku in battle stance on the door of Octavio's room.
Inspired by the genre
The older film is advertised on a theater billboard "No Translation Needed".
mentioned in dialogue
The section The Gold Watch in One Minutes references Amores Perros' theme, structure and style.
Christy says the film was good
music video clip is featured