Planet 51

Delivers a few pleasant surprises, including a smart story -- a reverse-E.T. riff that plops an American astronaut down in a world of just-like-us-only-green creatures -- and clever characters.

It's a missed opportunity. The premise is OK enough, even if it is like one of those old "Star Trek" episodes.

What's missing is originality and story and inventiveness.

Neither the film’s main players nor its random period spoofery has any personality.

Agreeable but flagrantly unoriginal.

Planet 51 is cute, but it's no "Shrek."

While expertly executed animation-wise and passably entertaining for very young kids (less so, their parents), is still as dull as the hull on Rocketship X-M.

I like the idea of a alien planet that is set in the 50s and a human from our time comes

This animated film is not bad and better than mediocre. I'd like to say it is one of the decent films.

Has some pretty good humour but is otherwise amongst the uninspired masses.

Planet 51 may have great animation, but the thin plotted story and uninteresting characters make it very boring. It lacks fun in a lot of ways. The premise was interesting, but was poorly executed.

Planet 51 does have a unique concept of an alien race in a 1950's flair environment, but the whole execution of the movie was a complete disaster. The story was quickly forgettable with humour so dull that Dwayne Johnson (voice of Charles T. Baker aka the Astronaut) couldn't save this animated feature to be highly entertaining. With a poor execution and only two scenes that will make you laugh, Planet 51 is at best to be a direct to video film than a theatrical feature.