History YMMV / UP

* UnintentionallySympathetic: Muntz could be read as this to some. While whether or not we're intended to like him is debatable, it's obvious that he's supposed to be in the wrong because it's implied that he killed tourists who came to Paradise Falls offscreen and tried to murder his biggest fan and a child. However, many fans found themselves feeling sorry for Muntz because of his sad backstory: he was unjustly labeled as a fraud and rejected by the scientific community, eluded by a stupid bird for ''sixty years'', all by himself and [[SanitySlippage lost his mind all because of a bird]]. Because of this, many fans found themselves rooting for Muntz and felt sorry for him. It doesn't help that he WouldHurtAChild.

* SignatureScene:
** The first ten minutes chronicling Carl and Ellie's life together.
** Carl’s house taking flight from the city.
** Carl [[spoiler:reading Ellie's scrapbook.]]

* HypeBacklash: Although nobody is going to call the film ''bad'', there is some debate on whether or not the film deserves the high praise it gets from critics and viewers, with some arguing that, aside from the [[SignatureScene iconic opening montage]], ''Up'' is, more or less, a typical Pixar film. A ''good'' typical Pixar film mind you, but not one that deserves to be regarded as Pixar's MagnumOpus, when there are plenty of other films from Pixar that are as good, if not better than ''Up'' overall.

* HypeBacklash: Although nobody is going to call the film ''bad'', there is some debate on whether or not the film deserves the high praise it gets from critics and viewers, with some viewers arguing that, aside from the iconic opening montage, ''Up'' is, more or less, a typical Pixar film. A ''good'' typical Pixar film mind you, but not one that deserves to be regarded as Pixar's MagnumOpus, when there are plenty of other films from the studio that are as good, if not better than ''Up''.

* SugarWiki/DevelopmentHeaven: The producers actually flew the animation team to Venezuela, to the mountain range that serves as the inspiration for Paradise Falls in the film. The crew went on an exhausting (and potentially life-threatening) all-day hike up the mountain, but it was worth it for the magnificent views they got at the top, which inspired most of the film's imagery. Then a sudden storm rolled in, and they were trapped on top of the mountain for hours, while strong rains and wind slammed them. Eventually, a helicopter was able to rescue them.

** The [[https://www.youtube.com/watch?v=LaLegF2hAxI "Married Life"]] theme has become infamous for its tear-jerking capabilities.

* RonTheDeathEater: [[UnwittingInstigatorOfDoom Construction worker Steve.]] Many fans think he deserved to be hit in the head by Carl due to the mishap with his mailbox, and blame him for causing Carl having to go to court and subsequently losing his house. What is overlooked however is the fact that Carl assaulted Steve, with him getting a gash in the head. Also Steve likely had no way of knowing how important the mailbox was for Carl.

* HarsherInHindsight:
** Muntz [[spoiler:ultimately bows out near the end of the movie by falling to his death.]] His voice actor, Creator/ChristopherPlummer, died from complications after a fall that injured his head.
** Earlier in the film, Fredriksen tells the construction worker 'Tell your boss he can have our house... when I'm dead!' This gets more tear-jerking when you realize that Ed Asner is no longer with us.

** Earlier in the film, Fredriksen tells the construction worker 'Tell your boss he can have our house... when I'm dead!' This gets less funnier when you realize that Ed Asner is no longer with us.

* HarsherInHindsight: Muntz [[spoiler:ultimately bows out near the end of the movie by falling to his death.]] His voice actor, Creator/ChristopherPlummer, died from complications after a fall that injured his head.

* HypeBacklash: While the film is widely considered to be good, there are a number of viewers who don't agree with the immense praise and hype the film gets, arguing that past the Married Life montage at the beginning, it is a rather run of the mill Pixar film.

* HypeBacklash: While it's generally well regarded, there are a number of people who don't exactly agree with the immense praise and hype the film gets. Arguing that the opening montage is the only real reason why ''UP'' is as well regarded as it is, and that once you take that away and look at the film as a whole, it's just an SoOkayItsAverage Pixar film.

** Even Kevin the bird - remember when [[spoiler:her leg was hurt]]? [[spoiler:There's also an insane lunatic hunting her, has been hunting her constantly for decades, and is [[AdultFear putting her babies in danger]] with the intent to capture them and do who knows what else afterward]].

** In a weird way the prolouge of the film can act this way to the rest of the film. It's not uncommon for people to say that the first 10 minutes were so well done the rest of the film can feel disappointing by comparison.

* JerkassWoobie: Muntz--Unjustly labeled as a fraud and rejected by the scientific community, eluded by a stupid bird for ''sixty years'', all by himself, going completely insane and paranoid... it's so tragic. Of course, [[spoiler: murdering or even attempting to murder innocent people (his biggest fan and a child, no less) because he thought they would take his bird away makes him a bit of a monster.]]

* FanNickname: ''[[WesternAnimation/{{Freakazoid}} Cosgrove]]: TheMovie'', mostly owing to Edward Asner's starring in the film (though he emotes a ''tiny'' bit more than TheComicallySerious Cosgrove).

* HarsherInHindsight: Muntz [[spoiler:ultimately bows out near the end of the movie by falling to his death. His VA, Creator/ChristopherPlummer, died from complications after a fall that injured his head.]]

* UnintentionallySympathetic: Muntz could be read as this to some. While wether or not we're intended to like him is debatable, it's obvious that he's supposed to be in the wrong because it's implied that he killed tourists who came to Paradise Falls offscreen and tried to murder his biggest fan and a child. However, many fans found themselves feeling sorry for Muntz because of his sad backstory: he was unjustibly labeled as a fraud and rejected by the scientific community, eluded by a stupid bird for ''sixty years'', all by himself and [[SanitySlippage lost his mind all because of a bird]]. Because of this, many fans found themselves rooting for Muntz and felt sorry for him. It doesn't help that he WouldHurtAChild.

* CryForTheDevil: Muntz is a bastard and FallenHero with how [[spoiler:Carl realizes immediately that telling him how to lure Kevin with chocolate is a bad idea, seeing his PsychoticSmirk]]. As we see in the opening, Muntz was once a respected scientist and explorer, who invented revolutionary technology. He then loses it all when scientists declare his bird skeleton a fraud and they strip him of his medals. Muntz vows to come back with a live bird, only for the task to take ''decades'' rather than a few months, with only talking dogs for company. That leads to GoMadFromTheIsolation where he kills anyone that comes, accusing them of wanting his bird. Carl tells Muntz sincerely that he and Ellie were the explorer's biggest fans, and he inspired them to come to Paradise Falls. Even as Muntz is hunting them down, Carl feels sorry for him because he knows the man was once a hero.

* FunnyAneurysmMoment:
** In less than three minutes. When they went to their picnic, it was so funny seeing Carl out of breath and unable to climb the hill. When the same happens to Ellie, it becomes bad news.
** The scene where Carl hits the construction worker on the head with his cane might quickly be funny for some... until it's given very real consequences and ends up ruining Carl's life.

* AwardSnub: ''Up'' became the second animated film since ''WesternAnimation/BeautyAndTheBeast'' to be nominated for Best Picture at the Oscars, but it only won Best Animated Feature and Best Original Score. Many felt Creator/EdAsner was also deserving of an award for his performance as Carl, with one critic going so far as to suggest he be the inaugural winner of a Best Actor in an Animated Feature category at the Oscars.