LP, your kid, if she watches the cartoon, will love the scooby movie. It did freak Mikey out once, but he soon recovered.
It was basically the cartoon with the twist that they had split up for a bit. The CGI bits were cool. Good enough to make it a cartoony feel.
The villian is a great surprise ending and "Mr. Bean" is great in it. (can't think of his name )
And neonopolis, here in Vegas, gave out really nice posters to each family. (we got two) The poster is the double sided kind that you would illuminate from behind