Fake Nationality: Too many to count. Just to list a few, Chinese Zhou Xun plays a Korean waitress, Australian Hugo Weaving plays a German composer, American Tom Hanks plays a Cockney gangster and so on and so forth.
Doing It for the Art: This is one of the most expensive Independent Movies ever made. Of course it would count as this.
Hey, It's That Voice!: The Japanese dub is a good as the original English version in the All-Star Cast department. For the sake of simplicity, only the actors who played their group of characters will be listed here:
Fabricants? Disposable clones employed for inhuman tasks without regard for their dignity? Sounds like Replicants.
Sonmi mentions reading the works of "optimists" Huxley and Orwell. This is a reference to Aldous Huxley and George Orwell, best remembered for their respective dystopian novels Brave New World and 1984
Unsurprisingly, the way Hae-Joo Chang looks like in the film kind of evokes Neo. Likewise, the Unanimity forces kind of look like not only resemble him, but also the police from the Tetragrammaton Council.
During Sonmi's speech, some of the Union and Unanimity forces, seem to be using the same submachine guns used by The Combine.