* CelebrityVoiceActor: Like most mainstream animated films, ''WesternAnimation/{{Planet 51}}'' has a lot of them, including Wrestling/DwayneJohnson, Creator/JustinLong, Creator/JessicaBiel, Seann William Scott, Creator/GaryOldman and Creator/JohnCleese.
* FakeNationality: Dwayne Johnson is half-Black and half-Samoan but voices the white Chuck.
* KidsMealToy: Had action figures at Burger King.
* WhatCouldHaveBeen: The movie was to be released by New Line in the United States, but when Creator/WarnerBros took over the studio the producers demanded that the film take up ''Film/HarryPotterAndTheHalfBloodPrince''[='=]s former release date. Warner dropped the movie in refusal, and Sony/[=TriStar=] then picked up the rights, settling with a November 2009 release date.
* WorkingTitle: Planet One, It was changed due to copyright issues with the Planet One Channel which produces children and teen TV programmes.
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