It's a great traditional Christmas classic story on the big screen. Watching on 3D would be a better experience, though it would be a little to extreme for kids. Other than the extreme, it would top of any Christmas movie being completed for this year. Jim Carrey was just amazing in this movie, and what he's capable of in his line of work.
It's a great movie. Above all it has every element of what a good scary movie is all about (creepy girl, disturbing scenes, and a chilling memorabilia of scary movies in your life). Isabelle Fuhrman did really good in this movie, and I hope that she makes more good movies such as Orphan. In my opinion its probably the best movie I will ever see this year.