Trivia

The Grammy-winning song "Approaching Pavonis Mons by Balloon (Utopia Planitia)," from The Flaming Lips' album "Yoshimi Battles the Pink Robots," originated as the score for a scene in this film. When that scene was cut, the song was placed on the album at the last minute.

Elijah Wood and Isaac Brock recorded cameos that were left out of the final cut of the film.

Eight years in the making. Director Wayne Coyne built much of the set in his back yard, as shown in the documentary The Fearless Freaks (2005).