Had fun watching this film.. despite the feeling I got a lot of the time, that this film was almost copying Monsters Inc. There're quite a few things that are extremely similar between the two, the relationship between an animal/monster and a small child, other animals trying to break that relationship, etc. It felt like that pretty much throughout the film, to me.
One of the redeeming features though, is Scrat :) Very very funny character, even if he serves no purpose :)