As a movie, Cloudy with a Chance of Meatballs isn't great. It was fairly entertaining, but didn't manage to achieve the broad appeal characteristic of Pixar films.
The film did take on some pretty heavy themes, if you reach a little. Traces of arguments against the green revolution's farming practices, genetically modified foods, political corruption, global warming and foremost overconsumption were addressed. None of these is discussed in any detail.
But in general the film was just an excuse for some crazy visuals, padded with stock childish humour. I give it 1.5 / 3 Mr. Creosote's: