Went to see Monsters VS. Aliens yesterday and I loved it. I laughed out loud in several places and the kids in the audience seemed to really enjoy it. Ya gotta see it in 3-D....I think it would be worth traveling a little ways to a theatre that offers it that way if your local theatre doesn't have the technology.
It is rated PG and there are lots of loud action/scary scenes which may upset very young children ( I always say, you are the best judge of your child and you know what may upset them, this is just my opinion). But I think it's basically okay for the average five year old and up.
If you know me, you know that I really despise so-called family movies that include inappropriate language and any kind of adult/sexy stuff (oh, they are out there, believe me.) This movie had nothing like that. It was very well done: great animation, funny script and excellent voice characterizations by people like Reese Witherspoon and Hugh Laurie (Dr. House!)It gets an A+ from me!
Let me know if you like it!