YMMV / Planet 51

• Awesome Music: blink-182's "Aliens Exist" was used in the marketing, and it perfectly captures the tone of the film, with memorable lyrics and a hardcore riff.
• Cliché Storm: Deliberately uses a lot of cliches from 1950s alien invasion movies. However, some found this palette swap a little boring.
• Ensemble Dark Horse: The Alien Dog is a fan-favorite for being a great homage to Alien.
• Ho Yay: Chuck and Lem are basically flirting through the whole movie. Some of their dialogue lampshades this.
  Skiff: I think Lem's saying he wants the closet.
• Retroactive Recognition: James Corden voices one of the military officers.
• Signature Line: "That's a funny place for his antenna".
• They Wasted a Perfectly Good Plot:
  • They could have done so much more with the Humans Through Alien Eyes concept, thrown in some weird alien biology, a few alien customs, and it wouldn't spoil the 1950s gags excessively, but the alien world is almost identical to Earth, making the "alien invasion role-swap" premise little more than a matter of swapped aesthetics.
  • Furthermore, the aliens' ignorance of the size of outer space could have been an interesting commentary on the close-mindedness of humankind, but it is ultimately thrown away after Lem attempts to make his speech.
• What Do You Mean, It's for Kids?: It's a fun kids cartoon movie, but has some raunchy innuendos, not to mention it's from one of the screenwriters of the Shrek franchise.

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