Many scary moments, and some very creepy ones (the ending of the second ghost comes to mind).
I thought it drove the story home very well and loved the visual eye candy, especially in 3D. But that was my families exprerience. I already see some others were not so impressed. Frankly, I went in thinking great, another Christmas Carol movie, but was pleasantly surprised by the impact of the sounds, special effects, and amazing animation. It may have been since my kids were with me that certain scences came across stronger for me, but I throughly enjoyed it.
Not the kid friendly movie that Back to the Future and Polar Express are, but definitely breathes some life back into this classic.
Never read the book, but is the ignorance and want characters part of it? They came across especially creepy to me.