- The Cast Show Off: Ewan McGregor did his own singing.
- Fake American:
- Non-Singing Voice: Most of Jonathan Rhys Meyers' singing parts in the movie are dubbed by Thom Yorke.
- Screwed by the Lawyers: The film was originally supposed to feature some of David Bowie's music, hence the title. When Bowie learned that the script for the film was partially based on the unauthorized biographies Stardust: The David Bowie Story written by Henry Edwards and Tony Zanetta and Backstage Passe written by Bowie's ex-wife Angie Bowie, he threatened the producers with a lawsuit. Bowie's songs were, therefore, not used, and the script was partially re-written to avoid unnecessary resemblance between Bowie and the Bowie-style character Brian Slade.
- Throw It In!: During the Festival sequence where Brian sees Curt perform for the first time, Ewan McGregor was only due to moon the disgruntled crowd. But inspired by the antics of Iggy Pop, he improvised, and ended up gesticulating wildly while flashing the audience, leaping about with his trousers around his ankles.
- What Could Have Been:
- Todd Haynes originally wanted to cast Jarvis Cocker as Jack Fairy.
- Courtney Love considered supplying music to the film's soundtrack; however, she withdrew after viewing a rough cut, claiming that the character of Curt Wild too closely resembled her late husband Kurt Cobain, both in character and physicality.
- Word of Saint Paul: Ewan McGregor has speculated on Curt and Arthur's fate after the ending of the film.
- Working Title: The film was originally titled Glitter Kids. In development, the original screenplay was titled Glam!
Trivia / Velvet Goldmine