Good: Beautiful effects. I also like that they didn't over Hollywood-ize the movie... and stuck closer to Dickens’ story. There were moments when I truly felt the emotions being expressed by the characters, which isn't that easy for film makers to achieve with me.
Bad: The artwork wasn’t consistent… some objects looked amazing, while others looked amateur. This is totally forgivable if the less detailed objects are not the camera’s subject, but in this case, some of those objects and characters were front and center. The most annoying thing was the slow, too smooth manner in which the characters looked around or at each other. This was a constant obstacle to becoming immersed in this fantasy world.
I think they did a pretty good job of keep each character's personality in tact. It probably doesn't matter at all to those who didn't watch the original series, or the first movies, which featured most of the original crew. But for me, it added another layer of entertainment because some things were funny simply because I recognized it from the original series. I also thought it was AWESOME for them to use Leonard Nemoy as the "old Spok". Effects were top notch, as was sound, costumes, and ever other technical aspect. The story didn't blow me a way though. When compared to every other movie, this one belongs in the same space as the best.