YMMV: Horton Hears a Who!

  • Alternate Aesop Interpretation: See What Do You Mean, It's Not Political? below.
  • Awesome Art: The visual development team went to great lengths to recreate Seuss's 1-dimentional drawing style for CGI and boy does it show, from the rubbery characters to the oddly-proportioned buildings with inexplicable wrinkles on them, to the various nods to Seuss's entire body of work.
  • Awesome Music: "Mountain Chase." The temp track for the sequence was "The Ecstasy of Gold", and you can definitely tell the influence. It can easily be mistaken for something Morricone himself wrote.
  • Ensemble Dark Horse: Jojo in the movie, thanks to his Emo Teen setup.
    • There's also Katie, the weird yellow puffball.
    • Vlad Vladikoff could also qualify.
  • Hilarious in Hindsight: In Katie's clover world, everyone is a pony and they all eat rainbows and poop butterflies. One episode of My Little Pony: Friendship Is Magic has the cloudcuckoolander Pinkie Pie attempt to eat a rainbow. However, the show has yet to feature lepidopteran defecation of any sort.
  • Memetic Sex God: Jojo.
  • Misaimed Fandom: See What Do You Mean, It's Not Political? below.
  • Moral Event Horizon: Vlad, who takes extreme pleasure in trying to break Horton by dropping the clover in the giant field of identical clovers.
    • Kangaroo having Horton roped, caged, and essentially tortured, over what she thinks is nothing but a speck.
      • A deleted scene shows that Kangaroo would have had the Wickershams burn Horton's house down over the speck.
  • Most Wonderful Sound: Jojo's singing voice. Being voiced by Jesse Mc Cartney undoubtedly helped.
  • Older Than They Think: The film got an understandable backlash from Seuss fans for modern references like "Who Phones" and "WhoSpace," presumably unaware that Seuss himself made references to computers in his later books.
  • So Okay, It's Average: While certainly the least-disliked Dr. Seuss movie (which isn't saying much, considering the competition), many Seuss purists don't see much to fuss over.
  • Tear Jerker: Horton finds the clover in the movie, and for a few seconds, no answer. The wail of despair he lets out is just wrenching.
  • They Wasted a Perfectly Good Character: Dr. La Rue. Ned goes to her for her for help, she tells him Whoville is in danger of being destroyed after the snowstorm...and then completely disappears from the movie.
  • The Scrappy: Yes, the Kangaroo's the main antagonist, but it seems like she's going out of her way to be the most unlikeable character, be it the book or the movie. Seriously, inciting a mob to torture Horton just because he won't give you the satisfaction of making you think you're right?
    • Not to mention when Vlad suggests she give him Rudy to eat in exchange for his services, while she decides against it, she still has to think about it for a second.
    • For some, Horton's Adaptation Personality Change makes him this. One animator not-so-affectionately referred to him as "that drunk guy at a party with a lampshade on his head who's trying way too hard to make people laugh."
  • What Do You Mean, It's Not Political?: Pro-life activists think this book was anti-abortion. Not only was Dr. Seuss pro-choice but the book was published two decades before Roe v. Wade. According to his wife, the central allegory is about fascism, corporatism and capitalism — "a person's a person, no matter how small" refers to big shot governments and businesses stepping on the common worker. At one point a pro-life group actually tried to use the line as their slogan, until Mrs. Geisel sued them.
    • It's also an allegory for how the Japanese were being treated after WWII; the book is even dedicated to a Japanese friend, Mitsugi Nakamura. There's shades of The Atoner here, as during the war Seuss did his share of anti-Japanese propaganda cartoons which he came to deeply regret.
    • It works as an allegory for Isolationist foreign policy too.
    • Bottom line, it was an allegory for a lot of stuff, just not abortion.
  • The Woobie: Rudy, the little baby joey that has to stay in his jerkass mother's pouch. It's hard not to feel sorry for the poor fella.
    • Jojo, who is so afraid of letting down his dad that he took a vow of silence.