* ActingForTwo:
** In the sequel, Creator/RobinWilliams returns to his role as Teddy Roosevelt. [[ItMakesSenseInContext He also plays]] a Teddy Roosevelt statue and [[{{Hologram}} Teddy Roosevelt]] hologram.
** Creator/HankAzaria plays the BigBad (Kahmunrah), the Thinker, and UsefulNotes/AbrahamLincoln.
** The same monkey (a female named Crystal) plays both Dexter and Able.
** In the third movie, [[BenStiller Larry]] and the caveman, Laa
* ActorAllusion:
** This is not Owen Wilson's first time [[ShanghaiNoon playing a cowboy]] - and in the sequel, we see his not-second-time getting buried up to his neck in sand. Bonus points for the inclusion of buddy-movie elements with Octavius.
** Bonus BONUS points for Steve Coogan, who played Octavius, also having been in a [[Film/AroundTheWorldInEightyDays buddy-type movie]] with Creator/JackieChan which also featured Wilson as one of the cowboy esque Wright Brothers.
** In the sequel, Creator/ClintHoward as a [[Film/{{Apollo 13}} NASA ground controller.]]
** In the third movie Ben Kingsley's pharaoh mentions [[Film/ExodusGodsAndKings owning 40,000 Jewish slaves at one time.]]
** [[Creator/SteveCoogan Steve Coogan's]] character [[Characters/AlanPartridge has a love of funny YouTube videos]]
* ActorSharedBackground: In the third film Larry mentions he is half Jewish and half Irish just like his actor Creator/BenStiller.
* AllStarCast: Much like ''Film/NationalTreasure'', it's quite surprising to see all the big name stars, including Creator/BenStiller, Creator/RobinWilliams, Creator/DickVanDyke, Mickey Rooney, Bill Cobbs, Creator/PaulRudd, Creator/RickyGervais, Creator/CarlaGugino, Steve Coogan and Owen Wilson.
* BillingDisplacement: Robin Williams is listed as one of the major actors in the credits, even though he only appeared for approx. 5 minutes.
* CastingGag: The trio of singing cherubs are played by the JonasBrothers.
* TheOtherDarrin: Nick was played by Jake Cherry in the first two films, but then by Skylar Gisondo (who looks ''nothing like'' Cherry) in the third. It seems the movie is attempting a {{timeshifted actor}}, but both actors are ''of the same age''.
* PlayingAgainstType:
** First of all. Dick van Dyke is one of the {{Big Bad}}s in the first movie.
** Ben Stiller's playing the main role in a couple of children's films here? Yeah..
** Don't forget Mickey Rooney!
* WhatCouldHaveBeen: An early [[http://screenplayexplorer.com/wp-content/scripts/night-at-the-museum.pdf draft]] of Battle of the Smithsonian had Ahkmenrah traveling to the Smithsonian with the others instead of being DemotedToExtra.
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