Imagine That is simply a nice kids film.
A bit of a modern fairy tale, Imagine that isn't bad nor great. A decent kids film with a few laughs and not really very memorable. Murphy does well and overall its cute fun.
A fun family movie that will have you laughing until the end, while the story and the lesson being taught are predictable, it's the humor that sets it apart, while it may not do much new it's still an enjoyable movie for the family.