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* AdvertisedExtra: Creator/OliviaWilde only has twenty minutes of screen time.
* DawsonCasting: An odd example since most important characters even though they ''look'' young are often quite old. Cillian Murphy in particular is in his mid 30's playing a character a decade younger (biologically speaking). And Music/JustinTimberlake is in his 30s. Of the entire main cast, only Creator/AmandaSeyfried was really 25 during production.
* FakeAmerican: Irish actor Creator/CillianMurphy does an American accent. Averted with the British Creator/AlexPettyfer - who usually played these at this time - as he keeps his English accent.
* ProductionPosse: Music/JustinTimberlake, Creator/AmandaSeyfried, Creator/VincentKartheiser and Creator/OliviaWilde had all starred in ''Film/AlphaDog''.
* PropRecycling: The car driven by Will is the same one from ''Film/{{Gattaca}}'' and ''Film/{{S1m0ne}}''.
* RecycledSet:
** The Sepulveda Dam in the San Fernando Valley, a popular filming location, has become something of a staple in most of Andrew Niccol's films.
** The beach from the Weis Estate is the same one Vincent and Anton swam from in ''Gattaca''.
* ScullyBox: Sylvia's sky high purple heels, to cover the ''over 10 inch'' height difference between Seyfried and Timeberlake.
* UnderageCasting: An extreme example as Music/JustinTimberlake is actually two years older than Creator/OliviaWilde, who plays his mother, and the same occurs with other actors playing parents. Justified as the film is set in a world where no one ages anymore.
* WorkingTitle: It originally was going to be titled "i'm.Mortal." It was also listed as "Now" on IMDB for a while.
* YouLookFamiliar: The director's wife, actress and supermodel Rachel Roberts, who played the eponymous character in ''Film/{{S1m0ne}}'', [[TheCameo cameos]] as a RichBitch who has her items stolen from Will and Sylvia.
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