I remember having seen this movie long back........and having enjoyed it a lot
On a second viewing however I realize that this is actually way worse than what I had believed when I was a kid
PROS : This movie is decent for kids below 10......or for people with the mental capacity of someone below 10. The songs are decent even if they are a bit in your face. The animation stands the test of time for me and it doesn't feel poor.
CONS : The movie has got almost no real plot. It tries to be a father son story, an underdog story and a sci fi story all at the same time. It's humour is slapstick at best, and most of the jokes fall flat more often than not. The father son relationship feels incredibly strained and it seems almost uncomfortable to watch. The ending is literally ridiculous and you are left wondering whether this movie was supposed to have a moral or something. Themes like bullying and parenting are treated pretty poorly and it really doesn't seem like anyone made an effort with the film. Perhaps the biggest problem is that none of the characters are memorable except possibly chicken little. You want to root for him but apart from that every other character is sloppily written and doesn't really add anything to the movie.
Final Thoughts : This movie was a moderate success when it released and was liked somewhat by audiences. However it's a classic example of a movie ageing badly and at this point it would feature in the worse half of animated movies. It's not a movie that I'd recommend to anyone.