* ActingForTwo: Eddie Murphy and Arsenio Hall. Technically, both are Acting For Four.
** As King Jaffe Joffer, Creator/JamesEarlJones tells Cleo [=McDowell=] "Do not alert him [Akeem] to my presence. I will deal with him myself.", referencing two different lines as [[Franchise/StarWars Darth Vader]] in ''Film/TheEmpireStrikesBack'' and ''Film/ReturnOfTheJedi''.
** Also, cameos by Ralph Bellamy and Don Ameche as the Duke Brothers, who Eddie Murphy and Dan Aykroyd sent to the poorhouse in ''Film/TradingPlaces''. This film is also the ''source'' of a later allusion: Creator/SamuelLJackson played an armed robber holding up a cheap diner in this movie, and [[Film/PulpFiction several years later]] would ''foil'' a pair of armed robbers holding up a cheap diner.
* DawsonCasting: The movie opens on Prince Akeem's 21st birthday. Eddie Murphy, who played the prince, was actually 27 at the time.
* TalkingToHimself: Hall and Murphy play three of the four characters in the barbershop; one of whom is an AlterKocker.
* TechnologyMarchesOn: If mobile phones were more widespread at the time, Semmi might have texted Akeem that his parents, the King and Queen, are in New York, and he's gone with them to the Waldorf Astoria.