Christmas on Mars
- Elijah Wood and Isaac Brock recorded cameos that were left out of the final cut of the film.
- 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.
- 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) (TV).