I expected something like Polar Express meets Tron:Legacy in terms of experience. But I was more than pleasantly surprised. Spielberg has somehow managed to capture the essence of the Tintin books: fun for young boys. There is a sense of that feeling there, that I remember having when I first saw Indiana Jones. People were actually having fun making the movie - (or so it seemed)
The best scene is the chase scene down the hill from the palace to the harbor. There are three or four amazing things happening in the main action, but there is also a lot of really detailed stuff in the background. Most of which I didn't have the slightest bit of time to study. I really hope that this is a film with treasure of little easter eggs and hints to other films. I'd run out and by a BluRay and study every frame.
There were two or three moments when I didn't feel quite at home in the picture, but they were only few. The dog didn't always work and sometimes the story felt a bit thrown together. Good to see some unreflected fun from Spielberg. I wouldn't be surprised if he himself would have dreamed of living through the experiences of Tintin as a child.