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!!The Film:
* AFIS100YearsSeries:
** AFIS100Years100Movies: #25
** AFIS100Years100Thrills: #44
** AFIS100Years100MovieQuotes: #15, "ET, phone home."
** AFIS100YearsOfFilmScores: #14
** AFIS100Years100Cheers: #6
** AFIS100Years100Movies10THAnniversaryEdition: #24
** AFIS10Top10: #3, Science Fiction
* BillingDisplacement: Dee Wallace as Elliott's mother Mary.
* CastTheExpert: The doctors are real doctors. Spielberg mentioned that this was necessary as they would be better at rapidly spitting out terminology that required years of medical school to lean than any actor who'd been simply given a briefing on it. Humorously, this lead to some competition amongst local doctors who all wanted to be in the movie.
* ColbertBump: Sales of Reese's Pieces candy '''skyrocketed''' after their inclusion in the film.
* CrossDressingVoices: Played straight with E.T. in the original version and in the Japanese dub, but averted in the Mexican Spanish dub.
* DeletedScene:
** Creator/HarrisonFord filmed a scene as the principal of Elliot's school, set after he frees the frogs, which Spielberg cut because he felt Ford's presence was too distracting.
** Two deleted scenes were reinstated for the [[SpecialEdition 20th Anniversary]] Elliot shows E.T. the bathroom and gets a call from his mother. E.T. plays around in the bathtub, which Elliot thinks he's drowning. Turns out he was having fun. The other one shows Mary finding Mike and Gertie during trick or treating, Gertie spills the beans on where Elliot is, and she tells them to get in the car.
** There was a subplot cut where E.T. was in love with Elliot's mom. He goes into her room and leaves a Reese's Pieces on her pillow.
** There's a scene of when E.T.'s getting Elliot drunk. Elliot gets sent to the nurse's office and writes the plans for the communicator on the wall.
** There was originally an alternate ending showing [[BookEnds the boys playing]] ''TabletopGame/DungeonsAndDragons'' with Elliot as the dungeon master. The camera pans up to the roof, where the communicator is calling out to E.T.
* EnforcedMethodActing: Filmed in chronological order so that the cast could become genuinely attached to the E.T. character. Young Creator/DrewBarrymore, in particular, took it the hardest: she was genuinely frightened when she walked in on Eliot with E.T. in his room and in tears during his DisneyDeath scene.
* HeyItsThatGuy: The blonde girl Elliot kisses at school will (ten years ''older'', of course) end up JumpingOutOfACake for Creator/StevenSeagal in ''Film/UnderSiege''. Yes, [[MsFanservice that one]].
* HeyItsThatVoice: In the Japanese dub, who was [[TheOtherDarrin dubbed twice]].
** E.T. was voiced by the late voice actress Kazue Takahashi in the first dubbed version and the second dubbed version, he's voiced by both Ako Mayama and RicaMatsumoto at the same time (who, by sheer coincidence, they will reunite together again, except this time as enemies, as [[VideoGame/SuperRobotWarsOriginalGeneration Aguila Setme and Lilcarla Borgnine respectively]].
** Elliot is Creator/DaisukeNamikawa in the first dubbed version and one of his first roles as a voice actor along [[Anime/MobileSuitGundam0080 Alfred Izuruha]].
*** He also worked in another series that involves alien contact, [[Manga/{{Gantz}} except this time, they DID NOT come in peace]].
** Tyler is Creator/MamoruMiyano in the second dubbed version (Also one of his first roles, and also counts as HilariousInHindsight if you know one of his later roles implies [[Anime/Gundam00AWakeningOfTheTrailblazer fighting against aliens]]).
* OldShame: Creator/StevenSpielberg came to regret the edits made to the film for the 2002 re-release.
* ThrowItIn:
** Gertie's line "I don't like his feet" was adlibbed, as was her "Give me a break" response to the claim that grown-ups can't see ET.
** When Elliott yells "It was nothing like that, penis breath" Dee Wallace was supposed to angrily yell at him to sit down. When she actually heard him say the line, she starting laughing and they left that take in the movie.
* UnintentionalPeriodPiece:
** Averted nicely unlike a lot of 80s movies. You can tell it was filmed in the 1980s due to the cars, the TV, and the family owning an Atari 2600 but it doesn't stick out like other examples. Many of the pop culture references they make like ''StarWars'' or ''Series/TheTwilightZone'' are still known by today's audiences.
** On the other hand, jock older brother Michael's introduction has him playing ''TabletopGame/DungeonsAndDragons'' without hinting at him having any geeky or creative HiddenDepths, which firmly grounds the film in the early 80s (the height of D&D's popularity as a fad) for fans of the film who are roleplayers.
* WhatCouldHaveBeen:
** The first choice to play Gertie? Creator/JulietteLewis. Her father made her turn down the role and Barrymore was cast instead.
** Creator/ShelleyLong was approached to play Elliot's mother. She turned it down as she was already signed on for the comedy ''Night Shift''.
** Creator/StanWinston turned down the opportunity to work on ''E.T.''. He would regret doing so.
** The book "E.T. from Concept to Classic" features many plot points and scenes cut from the script. One subplot from an early draft was to have a rival to Elliott named Lance who wanted to expose E.T.. The spaceship was going to land in a parking lot, but it was changed to a forest because that sounded more magical, amongst many others.
** Appearently, the movie first started as an adaptation of the [[http://en.wikipedia.org/wiki/Kelly%E2%80%93Hopkinsville_encounter Hopskinsville "goblin" incident]], and was going to be ''much'' darker than the current result.
** There was almost a sequel where an evil group of E.T.'s people come to Earth looking for him and torture Elliott and his family for information.
** Corey Feldman was originally up for a role as a rival to Elliott, a dork named Lance who threatened to expose E.T. The character is in the book adaptation, but was cut from the script. Creator/StevenSpielberg promised him a role in a future film, and he would go onto be in ''Film/{{Gremlins}}''.
** Originally E.T. was going to develop a crush on Elliott's mother. Some scenes of this were filmed before it was scrapped. It did make it into the novelization.
** Here are some pictures of the original design [[http://www.avclub.com/article/et-originally-had-lipscreepy-supple-lips-205080?utm_source=Facebook&utm_medium=SocialMarketing&utm_campaign=LinkPreview:1:Default of the creature.]]
** Michael was originally going to lure E.T. into his house using [=M&M's=], but this proposal of ProductPlacement was ''rejected'' by the company's executive, who perceived the movie as having an AudienceAlienatingPremise. Instead, Reese's Pieces were used, and the company that manufactured them sold so many Reese's Pieces that were able to become a major competitor to the company behind [=M&M's=]. [=M&M's=] are still used in the novelization.
* WordOfGod:
** Creator/StevenSpielberg stated that E.T.'s species is more similar to plants than any other creature and is genderless. Also, a series of trading cards from the 1980s list the family's last name as Taylor.
** Creator/StevenSpielberg has also stated that this movie is a StealthSequel to ''Film/CloseEncountersOfTheThirdKind''.
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!The Video Game:
* ChristmasRushed: An infamous example. "Hey Scott, make something awesome! You've got six weeks."
* CreatorKiller: This game led directly to the Great Crash of 1983, which annihilated Atari and Warner Bros.'s value. Atari boss Ray Kassar, who had already driven away several programmers who founded Creator/{{Activision}} and demanded the game's short development timetable, was ousted from his position and he has not been affiliated with the entertainment world at all since 1983. Shortly afterward, Warner sold off Atari, and the classic developer completely lost all of it's dominance when Creator/{{Nintendo}} released the NES and ended the crash in 1985, but they were able to hang around for another decade until Atari's inability to recover from the crash culminated in the Atari Jaguar, which finished off the studio.
* FranchiseKiller: In addition to being one of the ultimate GenreKillers in entertainment as far as video games go, this game also severely affected the status of Spielberg's classic film, and the ''E.T'' video game is rumored to be the reason why it took MCA/Universal another 6 years before they released ''E.T.'' on home video (it got a reissue in 1985 instead).
* GenreKiller: ''E.T'' is the mascot of the Great Crash of 1983, which not only reduced Atari to a shadow of it's former self for the remainder of the 80s and 90s, but destroyed almost everyone else in the industry, and likely would have sent gaming into a permanent small niche or worse had Nintendo not stepped up.