It’s not entirely clear why this movie even exists, except maybe to resuscitate Jack Black’s career.
Planet 51 never soars to the boundless heights, and skies, that its animation so fantastically illustrates.
For the most part, those young and old fans of the classic children’s books will find much to enjoy about this sprightly adaptation.
Credit Shrek 2 for being the rare sequel that more or less equals its predecessor.