This pleasantly mediocre CG-animation tale lands an astronaut on a distant planet whose inhabitants are living in an innocent, 1950s-style state of development. Fearing the brain-eating "humaniacs," the Planet 51ers view spaceman Chuck (voiced by Dwayne "The Rock" Johnson) as a monster — except timid green teen Lem (Justin Long). Planet 51 lacks the Pixar polish (particularly in its writing). An awkward European-American co-production, Planet 51 mainly succeeds at reminding you of all the better movies that inspired it.
