* AccidentallyAccurate: In the "Petting Zoo" short, Octavia the eight-legged cow [[http://scienceblogs.com/tetrapodzoology/2010/12/20/carnivory-in-cows-and-deer/ kills and eats a bird]].
* ActingForTwo: Sev'ral Timez consists of five characters, but are voiced by three actors. You try to sort it out.
* ActorAllusion:
** Creator/BrianBloom is no stranger to voicing characters in ''Street Fighter''-type fighting games; he played Comicbook/CaptainAmerica in ''VideoGame/MarvelVsCapcom3''.
** This isn't the first time Creator/JeffBennett voiced a [[JustForFun/CandleJack super creepy character]].
** [[Music/{{NSYNC}} Lance Bass]] knows a thing or two about being in boy bands. One of the clones even does *NSYNC's signature "Bye Bye Bye" move.
** Alex Hirsch's sister Ariel has a voice cameo in "Boyz Crazy," as a crazy fan of Sev'ral Timez, which, according to Alex, was pretty much how she was with NSYNC (and Lance Bass in particular, who voiced one of the band members in this episode).
* ChannelHop: Season 2's episodes and onwards will premiere on Creator/DisneyXD, and sadly, [[BadExportForYou the XD version has the]] CreditsPushback. No more decoding for you!
** Luckily, the same episodes air on Creator/DisneyChannel as part of their "Disney XD on Disney Channel" block, so decoding will continue.
* CreatorCameo:
** Alex Hirsch voices both Grunkle Stan and Soos.
*** As well as Old Man [=McGucket=], Quentin Trembley, the gnomes, several of the members of Sev'ral Timez and Bill Cipher.
** Former writer/creative director Michael Rianda voices Lee, Thompson and Mr. Poolcheck.
* CrossDressingVoices: Grenda is voiced by Carl Faruolo.
** Grunkle Stan also momentarily sounds like a woman after accidentally drinking voice-altering tonic.
* DescendedCreator: Alex Hirsch does the voice of both Stan and Soos.
* FanCommunityNickname: Tumblr Fans of the show are called Fallers.
* FanNickname: [[spoiler: [[EldritchAbomination Bill Cipher]]]] was known as "Mr. Pyramid" and "ACE" before being properly introduced.
* HeyItsThatVoice: [[HeyItsThatVoice/GravityFalls Has its own page now]]!
* IKnewIt:
** [[spoiler:Stan has Book 1 and he is aware of the crazy supernatural stuff that happens in town but lies about it]]
** Wendy [[spoiler: knows about Dipper's crush on her.]]
** [[spoiler: Soos becomes a zombie in "Scaryoke".]]
** [[spoiler: The author of the books has 6 fingers.]]
* ManOfAThousandVoices: Alex Hirsch voices at least five different characters in the show, and they all have their own distinct voice.
** More specifically, he voices: Stan, Soos, the gnomes, Bill Cipher, Quentin Trembley, Old Man [=McGucket=], Norman, Paper Jam Dipper, and additional background characters.
** Music/GreyDeLisle also voices many incidental characters on the show, some of the most notable being Mrs. Gleeful in "Little Dipper," the Summerween Superstore clerk and Gorney in "Summerween," Grunkle Stan's new voice in "Bottomless Pit," and the woman who asks Soos for directions and ends up falling in love with him in "Carpet Diem."
* NamesTheSame: The Lamby Lamby Dance in the episode, "The Inconveniencing", has the same name as a certain toy lamb in ''WesternAnimation/DocMcStuffins'', a Disney Junior show.
* OldShame: Alex Hirsch is, according to a [[http://www.reddit.com/r/gravityfalls/comments/1kgq85/i_am_alex_hirsch_creator_of_gravity_falls_ask_me/cbosezb?context=3 reddit thread]], not terribly fond of the 11-minute pilot used to pitch the show.
-->"Any chance we'll see the full unaired pilot at some point in the future?"
-->"Oh lord I hope not. That thing was a mess, haha! That would be like showing you awkward photos from my high school prom. We all have dark horrible secrets. That 11 minute Flash pilot was mine."
* OneOfUs: Someone working on the show is madly in love with ''Franchise/StreetFighter''. And ''VideoGame/SuperMarioBros2''. And ''VideoGame/PacMan''.
* TheOtherDarrin: Strangely enough, in a commercial for Gravity Falls mealbags at Subway, Kristen Schaal does not voice Mabel. Even stranger, all of the dialogue for the twins in that CM is taken from clips of previous episodes, and they didn't dub over Jason Ritter's voice for Dipper. Maybe Kristen Schaal just doesn't like Subway.
** Creator/NathanFillion voices Preston Northwest in season 2 while another actor voiced him in "Irrational Treasure".
* PromotedFanboy: Emmy Cicierega (sister of Creator/NeilCicierega), who has done [[http://emmyc.tumblr.com/tagged/gravity-falls fanart]] for the show, [[https://twitter.com/EmmyCic/status/418164421564055552 now works on the show as a storyboard artist.]]
* RelationshipVoiceActor:
** A good amount of the cast is basically a mini ''WesternAnimation/AdventureTime'' reunion: Candy is BMO and Lady Rainicorn, Mabel is Jake Jr., Blendin Blandin and Bobby Renzobbi are Lemongrab, Pacifica is Susan Strong, Tambry is Flame Princess, [[Creator/JohnDiMaggio Manly Dan]] is Jake, [[Creator/JeffBennett the Summerween Trickster]] is Choose Goose, and [[Creator/DeeBradleyBaker Waddles]] is Cinnamon Bun.
* ScheduleSlip: For some unexplained reason there are a lot of long delays between episodes in the US.
* TalkingToHimself: Grunkle Stan and Soos.
** Literally in the episode "Double Dipper" with Dipper and all his clones.
* UrbanLegendOfZelda: There is a picture circulating the Internet of [[Franchise/TheSlenderManMythos the Slender Man]] watching Dipper and Mabel from the background in one of the episodes. This is not the case; viewing the episode itself yields no Slender Man.
* WhatCouldHaveBeen:
** [[http://superpunch.blogspot.com/2012/06/gravity-falls-concept-art.html The early concept art]] shows several possible designs for the characters.
** Creator/NeilCicierega composed [[http://neilcicierega.tumblr.com/tagged/gravity-falls two unused themes]] for the show.
** There was going to be an episode based on the David Bowie film Film/{{Labyrinth}}. Mabel would love the movie, but Dipper would hate it due to a fear of puppets. Dipper wouldn't admit to being afraid of the puppet; he would just call the movie dumb. Mabel would summon the Goblins to take Dipper away so she could watch the film. The Goblins would come out of the film take Dipper to the Labyrinth. [[{{David Bowie}} The Goblin King]] would try to get Mabel to go through the labyrinth to find Dipper, but Mabel would instead want to spend time with the Goblin King. The episode would end with Dipper admitting his fear of puppets. [[{{ExecutiveMeddling}} The episode wasn't made because the studio execs]] [[{{ViewersAreMorons}} didn't think the audence would get the reference.]]
** Alex Hirsch wanted Creator/BobOdenkirk to play Stan but [[https://twitter.com/_AlexHirsch/status/373275648136998912 he turned the offer down.]]
** The music for the [[https://www.youtube.com/watch?v=CQSLFBfZXF0 SDCC trailer]] was originally composed as an alternate theme song, according to the Gravity Falls team's [[http://gravi-teamfalls.tumblr.com/post/93948638918/the-full-theme-from-our-s2-trailer-originally tumblr]].
* WordOfGod: Alex Hirsch, the series creator, frequently answers fan questions on his [[https://twitter.com/_AlexHirsch Twitter feed]].
** Wendy's last name is Corduroy.
** Dipper, Mabel and Stan's eyes are brown (Mabel's green eyes in "The Inconviniencing" are implied to be a result of overdosing on Smile Dip), Wendy's are green, and Li'l Gideon's are blue. As for Soos? "It's a mystery, dude!"
** Mabel is the older of the twins by 5 minutes.
** Hirsch describes the show as ''TwinPeaks'' meets ''TheSimpsons''
* WriteWhatYouKnow: Alex Hirsch based the series on the childhood summers he and his twin sister spent camping with their great-aunt.
* WriteWhoYouKnow: Dipper is based on Alex Hirsch himself and each of the other main characters on people he knows. Mabel is based on Hirsch's twin sister Ariel, Grunkle Stan on their Grandpa Stan, Soos on Hirsch's one-time roommate Jesus and Wendy on a girl he had a crush on in his youth (rumored to be Creator/LaurenFaust).
** Wendy's list of ex-boyfriends [[http://ariel-is-mabel.tumblr.com/post/41441015383/instead-of-doing-ask-ariel-today-im-doing uses the names of real people]] Ariel Hirsch had crushes on.
----