* AllStarCast: Creator/MatthewMcConaughey, Creator/AnneHathaway, Creator/JessicaChastain, Ellen Burstyn, Creator/MichaelCaine, Creator/TopherGrace, Creator/CaseyAffleck, Creator/MattDamon, Creator/JohnLithgow, David Gyasi and Wes Bentley.
* BilingualBonus: The pattern of dots on TARS' body is his name written in large--and presumably unraised--Braille.
* DawsonCasting:
** Cooper is said to be around thirty-five. Creator/MatthewMcConaughey was a full ten years older.
** Murph is ten years old at the start of the film, and Mackenzie Foy was twelve when she filmed her scenes. Creator/JessicaChastain however was the same age as her character for scenes where Murph is older.
** Creator/TimotheeChalamet was eighteen playing Tom at fifteen.
* ExtremelyLengthyCreation: Jonathan Nolan worked on the script for four years.
* FakeAmerican: David Gyasi and Creator/DavidOyelowo are British.
* PlayingAgainstType:
** [[spoiler:Creator/MattDamon typically plays heroic characters. Here, he plays a DirtyCoward antagonist who wants to leave Cooper and his friends to death]]. Examined [[http://www.cinemablend.com/new/Why-Interstellar-Secret-List-Cameo-Worth-Celebrating-68127.html here]] in this article (spoilers herein).
** Also [[spoiler:Creator/MichaelCaine. In all the many Nolan movies he appeared in before he was always completely reliable and trustworthy, which makes it completely unexpected that he deceived everyone the whole time (though it was still for what he saw as a good cause, though in a ColdEquation sort of way).]]
* ProductionPosse:
** Several familiar names return among the crew, such as production designer Nathan Crowley, editor Lee Smith and Music/HansZimmer. One notable absentee is cinematographer Wally Pfister (who was busy with his own film ''Film/{{Transcendence}}'' with Creator/JohnnyDepp) who had shot every one of Nolan's films since ''Film/{{Following}}''. His replacement, Hoyte van Hoytema, has since taken over as Nolan's favoured cinematographer.
** Creator/AnneHathaway, Josh Stewart, and William Devane all return to work with Nolan here after first collaborating with him on his previous feature (''Film/TheDarkKnightRises''), while Creator/MichaelCaine returns for his sixth collaboration with Nolan.
* RealLifeRelative: Creator/MatthewMcConaughey's two children cameo [[spoiler: as Murph's family at the end]].
* RealityIsUnrealistic: An interesting version of this trope. In an attempt to create a visually-astounding black hole, Kip Thorne (producer, and theoretical physicist) used the most accurate, currently-known equations to simulate it. What came out was unlike anything any previous depiction has shown, and was initially thought to be a rendering error. [[http://www.wired.com/2014/10/astrophysics-interstellar-black-hole/ Instead, it was so accurate Dr. Thorne thinks he can get a research paper published from the results.]]
* RealitySubtext: The school that Murph and Tom attend is called Longview School, and is an actual school in Alberta where the movie was filmed. Creator/MatthewMcConaughey had also attended a Longview school in Texas.
* SeparatedAtBirthCasting: Creator/TimotheeChalamet as 14y/o Tom Cooper does indeed look like a young Creator/CaseyAffleck.
* StockFootage: The pre-recorded interviews with the old folks, who talked about the harsh farming conditions of their time, were actually from Creator/KenBurns' documentary ''The Dust Bowl''.
* ThrowItIn: Creator/ChristopherNolan decided to be more spontaneous with IMAX in this film. With previous projects, he would carefully select scenes that he felt would be enhanced by the format and map them out in detail in order to work around the IMAX cameras' weight (which limited camera movement) and loud noise (which limited dialog). With ''Interstellar'', Nolan decided to have an IMAX camera and film stock on standby just in case he felt that a scene required it at the last minute. Cinematographer Hoyte van Hoytema was able to add to the looser feel of this film's IMAX sequences by simply ignoring the camera's weight and carrying it around on his shoulder. Also, because the actors were often wearing helmets with interior mics, Nolan was able to shoot a lot of dialog heavy scenes in IMAX because he didn't have to worry about the camera noise interfering with audio pickups.
* WhatCouldHaveBeen:
** Creator/StevenSpielberg was originally attached to direct under the first script written by Creator/JonathanNolan. This makes certain twists in the third act make a ''lot'' more sense.
** The [[http://placetaken.blogspot.com/2014/05/corn-space.html original version]] had more humor, and featured the NSA (not NASA, the ''NSA'') forcing the space mission. In addition, the [[spoiler:time travel at the end was to be much, much more complex.]] There was also a bunch of things changed from the original script, such as:
*** Murph was supposed to be a boy.
*** We would've seen a young Dr. Brandt finding the wormhole in the film's original cold open.
*** A stray probe leads Cooper and Murph to NASA, not morse code.
*** Chinese astronauts as antagonists. [[spoiler: They reach the planets before Cooper and his team does, but die from high radiation from a nearby star.]] On top of that, [[spoiler:the Chinese had droids of their own that tried to stop the team when they tried to leave the planet with an invention that could save humanity.]]
*** Aliens were present.
*** Amelia and Cooper falling in love.
*** The original script suggested that TARS and CASE were more humanoid robots instead of the blocks we see in the film. [[spoiler:The Chinese droids also had similar designs, which allowed one of them to sneak onboard disguised as CASE]].
** Bill Irwin also provided the voice for CASE in addition to TARS, but was later replaced by Josh Stewart.
** Jonathan Nolan, who wrote the original script, revealed that the original ending to the film would have had Cooper trying to send the data back to Earth, only for the wormhole to collapse before he does so. No convoluted time travel plot or ThePowerOfLove solving everything. Just a plain DownerEnding.
* WorkingTitle: It was filmed under the title "Flora's Letter".
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