Planet 51 (2009)

PG  |   |  Animation, Adventure, Comedy  |  20 November 2009 (USA)
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Ratings: 6.1/10 from 39,394 users   Metascore: 39/100
Reviews: 71 user | 154 critic | 21 from

An alien civilization is invaded by Astronaut Chuck Baker, who believes that the planet was uninhabited. Wanted by the military, Baker must get back to his ship before it goes into orbit without him.


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Cast overview, first billed only:
Neera (voice)
General Grawl (voice)
Lem (voice)
Skiff (voice)
Freddie Benedict ...
Eckle (voice)
Alan Marriott ...
Glar (voice)
Soldier Vesklin (voice)
Soldier Vernkot (voice)
Lewis Macleod ...
Additional Voice (voice)
Additional Voice (voice)
Additional Voice (voice)
Vincent Marzello ...
Additional Voice (voice)
Emma Tate ...
Additional Voice (voice)


Lem is just an average teenager working on getting the girl and furthering his career at the local planetarium - except that he's an alien. At least to U.S. astronaut Captain Charles T. Baker who lands on Lem's planet hoping for a quick flag plant and a hasty return to earth and his millions of screaming fans. But on this alien planet the media has tagged spacemen as brain-eating, zombie-creating monsters, causing Baker to run for his life and into Lem's house. Now it's up to the green native to get the clumsy astronaut back to his spaceship before military dictator General Grawl and mad scientist Professor Kipple manage to exterminate the Earthly visitor. Written by The Massie Twins

Plot Summary | Plot Synopsis


Something strange is coming to their planet...Us! See more »

Motion Picture Rating (MPAA)

Rated PG for mild sci-fi action and some suggestive humor | See all certifications »

Parents Guide:




| |



Release Date:

20 November 2009 (USA)  »

Also Known As:

Planeta 51  »

Box Office


$70,000,000 (estimated)

Opening Weekend:

$12,286,129 (USA) (20 November 2009)


$42,194,060 (USA) (5 March 2010)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

2.35 : 1
See  »

Did You Know?


Production lasted 16 months, roughly half the amount of time it takes to make a Pixar movie. See more »


When the soldiers remove items from Chuck's spacecraft, one of them drops an Ipod, which begins loudly playing music for all to hear. Ipods don't have speakers, just a headphone jack. See more »


[first lines]
girl: I've never gone parking before. I'm really not that kind of a girl.
boy: Well, I'm not the kind of a guy who would go with *that* kind of girl.
girl: Why that's so sweet - I think.
boy: There's nothing to be scared of.
[as alien craft rears up in front of them]
See more »

Crazy Credits

There is an additional scene halfway through the end credits. See more »


References Star Wars: Episode V - The Empire Strikes Back (1980) See more »


Also Sprach Zarathustra
Composed by Richard Strauss
Licensed by Peters Edition Limited, London
All rights reserved
International copyright secured
Performed by The London Metropolitan Orchestra
Produced by James Seymour Brett (as James Brett) and Graham Walker
See more »

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User Reviews

Good Not Great
21 November 2009 | by (United States) – See all my reviews

I took my 8 year old daughter and her friend to see this opening night. There was a decent size crowd who seemed to enjoy it. For ESPN fans one of their long time personalities, who has his own video short series on the website, was there. But I digress.

It took a while to realize that it definitely was Dwayne Johnson as the astronaut's voice. He's created a great niche for himself in family films and I think he does good job. Justin Long was a good choice for the lead "alien" Lem and John Cleese is always a good choice as he did a small role as the professor. The role of Skiff brought good humor to many scenes. Sean William Scott was very animated in his voice acting for this character. Other than Rover and the hippie-like guy, the rest of the characters are just back drops without adding much.

We laughed quite a bit throughout the movie, which is mostly the point. There was plenty of cute humor with the dog-like robot Rover, who was a little reminiscent of WALL-E, a little. The down-side was that it never drew you in to fully connect, sympathize, like or dislike any of the characters. I didn't see myself rooting for anyone over anyone else. If the message is supposed to be about not judging anyone based on appearance, that message was shallow. If the message was to keep an open-mind toward what is possible and to learn new things, that message was under-developed.

Bottom line, the kids enjoyed it and we had a good entertaining night out. So in that respect it served its' purpose. The animation was suitable and I liked the 50's like theme of the planet. One or two adult humor jokes in there that could have been omitted and not change the movie.

For a family movie 7/10.

33 of 52 people found this review helpful.  Was this review helpful to you?

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